Working out alone can be pretty, well, lonely--and less than motivating. Let one of these sites serve as your "gym buddy" and you may notice better results; plus, these sites can make wellness fun. Mindbloom turns achieving goals (like exercising daily or complimenting your partner) into a fun social game; you can play it with friends and family members. It is web-based and free. GoodGuide is a website that rates over 65,000 non-toxic, environmentally friendly products from companies with good social and safety records. It's web-based and also has an iPhone app so you can check products' backgrounds on the go, and you can share your recommendations with others. Use DailyBurn to track what you eat and when you work out, and improve your results by choosing "Motivators" (other site members, or friends you invite) to keep you accountable. Use it on the web or as an iPhone app. Finally, SocialWorkout.com is a community-based fitness and wellness blog that sets challenges for members and features local fitness guides, including exercise classes and events.

What do you do to make fitness and wellness fun?

As smartphone ownership has increased, so have the chances for theft, data loss, and viruses. Luckily, there are new ways you can protect your device. If you subscribe to Apple's MobileMe (which syncs your iPhone, iPad, Mac, and PC and is free to try or $99/year for an individual)) you can download the free "Find My iPhone" app (it works with iPads too); if you realize your iPhone has been stolen, you can lock or wipe it remotely. Lookout works on Android, BlackBerry, and Windows Mobile--and it's a free download. It provides security against viruses and hackers, data backup, and even a cool location feature if your phone is stolen (you can also wipe all your phone's data via the web). Norton Smartphone Security, currently in beta and available for Android, includes virus scanning, remote locking and wiping, and the ability to block unwanted calls and text messages. Here's hoping that your "missing" phone hasn't actually gone farther than under that pile of papers on your desk--but if it's in the wrong hands, these tools will keep it safe.

What's your favorite security tip for your smartphone?

If your cell phone bill is consistently higher than you think it should be, some online tools can help you analyze and reduce it. First of all, check out CNET's quick guide to your cell phone bill, which explains the mysterious fees and surcharges you might notice. Then check out some online services: BillShrink says that 80% of people overpay for cell phone service--use the site to compare your usage patterns with available cell phone plans (you can use it for other bills, like cable, too). The service is free, but for a more customized report, check out Validas, which starts at $5 for one use and analyzes your actual cell phone bill. And if you're satisfied with your current plan but want to make sure not to exceed your call time, check out OverMyMinutes--it automatically checks how many minutes you've used and sends you an e-mail or text message if you're about to exceed them. For the slightly more tech-savvy, Doughroller notes that Mozilla Firefox "has extensions for all of the major US cell service providers, showing you exactly how much time you have left on your cell phone for the month." These services should help you avoid surprises when your bill arrives.

Got any cool tips for cutting your cell phone bill? Leave them in the comments!

The iPhone 4 is still brand-new, so the market isn't yet jam-packed with accessories. But manufacturers are hurrying to come out with add-ons for the slim new phone. Here are some of our favorites.

MoviePeg, $7.53

This stand supports your iPhone while you watch video or chat using FaceTime, hands-free.

Case-mate iPhone 4 Barely There Case, $24.99

This super-slim case covers the back and corners of the iPhone 4 and includes a screen protection kit. A similar product, which also protects the iPhone 4's back and edges while leaving the screen exposed, is Apple's Bumper ($29).

iPhone 4 Dock, $29

Use this dock to charge your iPhone 4, or connect it to speakers, the TV, or your computer.

iPhone 4 OneFit Armband, $29.99

Keep your iPhone with you when you go running (or anywhere else). You can unclip the case without removing the armband, too.

Elan Passport Wallet for iPhone 4, $39.99

This case makes it easy to carry your super-slim iPhone 4 along with cash and credit cards, and gets you out the door fast.

If you manage a small office, you're lucky because you have the flexibility to run it with cool web tools. Our favorites streamline everything from billing to backup.

Online Backup: Mozy

If you work from home, you know you need a secure way to backup your files. Mozy offers unlimited, automatic online backup for music, photos, videos, and the other files on your computer. MozyHome is $4.95/month, while the more advanced MozyPro is aimed at small businesses.

You no longer have to fly across the country to meet with clients: These web conferencing and virtual meeting tools help you hold your meeting without leaving your desk.

Grocery shopping may not be your favorite chore, but these tips and tricks can make it easier and faster: The Grocery Game is a service that matches the lowest-priced products at your supermarket or drugstore matched with manufacturers' coupons and specials and provides you with a custom color-coded shopping list (for more details, watch this video). Dave Cheong's Grocery Shopping Helper is free and helps you map your grocery store by aisle. It's $10 for 8 weeks. Coupon Sherpa links to 100 weekly grocery store circulars. mygrocerydeals.com lets you browse circulars from your local stores in one place and create a shopping list. Housewife Hacks teaches you how to make a price book. And for some more high-tech ideas, check out these grocery shopping apps: Grocery iQ (iPhone, free) helps you build your list and integrates coupons. Sophiestication's Groceries is another cool list-making app (iPhone, $1.99). And Shopper is $0.99, includes barcode scanning, and works on both iPhone and Blackberry. Finally, if you're one of those shoppers who's always interested in the contents of other people's carts, check out the fun grocerylists.org, "the world's largest online collection of found grocery lists."

Have you used the Web for groceries? What are your favorite sites and online shopping secrets?

This week, Steve Jobs officially revealed the iPhone 4 which comes with a longer battery life, video chat/calling and a bunch of other stuff to make you look twice. Thinking about upgrading, or taking the iPhone plunge for the first time? Here's what you should know.

What will it cost, and when can I get it?

The iPhone 4 will be available on June 24 (pre-orders begin June 15). It comes in black and white, and if you sign a new contract, it's $199 for the 16GB version and $299 for the 32GB version. MobileCrunch explains, "If your upgrade date is in 2011 (i.e. 1/1/11 or later) you can get the early update price, which is $399/$499. And of course you can always pay full price: $599/$699 with no contract at all. The 3G is being retired, and the 3GS will now be $99. The June 24th date is for the US, France, Germany, Japan, and the UK. The rest of the world will get it in July."

Ah, summer vacation...but first, you have to get to your destination, and with kids, computers, and luggage in tow, that can be a hassle. These gadgets, priced from $1.99 to $350, will make your trip easier, more fun, or both.

While you might automatically turn to the Internet to purchase MP3s and DVDs, most people still drive to the drugstore to pick up razor blades and toilet paper. But now online retailers are making it easier, and cheaper, to buy household products online--so you can save time (and money, too). Here are three of our favorite services, all available nationwide--and keep your eyes peeled for Procter & Gamble's e-store, set to launch this year.

Alice.com

Alice.com is an incredibly convenient site that lets you buy household essentials (everything from toilet paper to laundry detergent to garbage bags to diapers) online. The site's well-designed interface makes it easy to find what you need, prices are low (and many products come with built-in coupons), and shipping is always free. Plus, the option to receive reorder reminders means you're never stuck without a roll of paper towels.

Graduation is around the corner - what are you getting the graduates on your list? Wow them with these fun, unusual, and really useful digital gifts.

Flip SlideHD, $279.99

The newest Flip handheld video camera shoots up to four hours of HD footage, and its 3" widescreen slides open to play video back instantly. Plus, you can decorate the front of the camera with a custom image.

You've got your iPad, now it's time to dress it up with some fun new accessories. Retailers are just beginning to roll out these add-ons, so you can expect to see more of them in months to come. For now, here are some of our favorites.

Wrapsol Scratch-Proof Protection, $34.95

This handy kit includes special pre-cut protective film, a microfiber towel, cleaning solution, and even a special iPad squeegee--yes, your iPad will most likely be cleaner than your car.

You've mastered Facebook and Twitter. Next up: Location-based social networking. So how does it work? Here are the details on a few apps you may have heard about: Foursquare has apps for iPhone, Blackberry, Palm, Android, and other devices with GPS. "Check-in" to let it know where you are (bar, restaurant, office, etc.), then it will tell your friends where to find you and you'll also see their favorite spots. You can also create tips about the places you go and read those left by other users--check in at a bar and you might find tips on tasty drinks from other users. Plus you earn points every time you check in somewhere, and users can also get rewards (like free drinks) from participating businesses.

Tons of major retailers are offering free wireless internet these days, so if you're carrying your laptop around town it's easy to find a spot to check your e-mail. Here are spots offering free wifi now, along with any limitations you need to know about: Starbucks offers two free hours of wireless with a registered Starbucks card. McDonald's has wifi in 11,000 of its 13,000 U.S. restaurant and and it's in all locations of Cosi, Denny's, Panera, . Barnes & Noble has free wireless in all its stores, and Borders has it in most of them. You'll also find wifi at Apple, Best Buy, Office Depot, and Staples. For more local options, check out the aptly named Open WiFi Spots, a crowdsourced site you can search by city and state.

You know about Evite already, but tons of other sites can also help you with your party planning - including more than just sending invitations. Zoji helps you manage events for different groups of friends, send invites and share photos. Enclude and PurpleTrail are ad-free (and don't cost anything to use); PurpleTrail lets you send printed invites, too (at $1.99 for a folding card). Manvite claims to be "Evite for the alpha-male"--plan traditionally masculine events like bachelor parties and beer drinking. Paperless Post is the classiest possible evite site--its custom online stationery (pricing varies based on how many "stamps" you use, but starts at $4 for 20; get the first 25 stamps free) looks like the real thing. MyPunchbowl is a full party planning site--we especially love its potluck planning feature; you can also survey guests on the dates that work for them and order party supplies. Socializr integrates with social networking sites like Facebook and Flickr. And you collaborate with friends about social events and vote on dates and times.

A paperless office... house... life is a dream for a lot of people, but it's hard to know where to start cleaning out all that dead-tree clutter. However, some good online resources can help. First, figure out what you should actually save: Bargaineering has a good guide for financial documents, and check out this official advice from the IRS, too. Instructables suggests making a "first pass junk removal," and. Next, remember that even if you want to save a document, it doesn't have to be on paper--scan it instead! PC Mag rounds up reviews of personal document scanners. Once it's scanned, make sure it's backed up--see our favorite online backup services. You may also want to buy a software program like Paperless or NeatReceipts, a combined scanner/software system. If you don't have to keep something but don't want to just toss it in the recycling bin, it's time to shred. Simple Mom recommends keeping a personal shredder in an easy-to-reach place and getting in the habit of "shredding most anything featuring your name and any pertinent information."

Treehugger has tips on reducing the amount of junk mail you receive. One site you'll want to know about is 41pounds.org, which contacts companies on your behalf and promises to reduce the amount of junk mail you receive by 80 to 95%. (It costs just $41 for five years and donates 1/3 of subscriber fees to environmental organizations.) You should also register with DMAchoice,which helps reduce direct mail. And Catalog Choice is essential for helping you control the catalogs you receive.

If you're not using rebate sites when you shop online, you're paying too much! In case you're not familiar with these sites, they're basically shopping portals--when you shop through them (by clicking on a link to OldNavy.com through their site, for instance, rather than going directly to OldNavy.com), you get cash back. (What's in it for the rebate sites: They get a commission when you shop through them, too.) Some of our favorite rebate sites: Ebates.com, the best-known site, offers cash back from over 1200 stores, and has coupon codes and printable coupons as well. Your cash back is sent to you as a check or via Paypal four times a year. FatWallet works much the same way, but they have 800 merchant partners and process rebates weekly, using a check or Paypal (once you've earned at least $10 back). Mr. Rebates works with over 2000 stores and you cash out at $10. At MyPoints, earn points from shopping (and by doing other online activities like taking surveys) that you can redeem for gift cards.

Other rebate sites allow you to donate cash back to a good cause...

You know you should back your computer up regularly, but you just haven't gotten around to buying an external hard drive yet...Sign up for an online backup service and you'll never have to worry about losing that important report again, plus you won't have to add another piece of hardware to your desk. Here are the online backup services we like. All of them boast offer free trials and boast easy installation, encrypted files, continuous data backup, the ability to back up only new data or data that's been changed (instead of wasting time re-uploading files you've already backed up), and automatic and scheduled backups.

Getting sick of your same old iTunes library? You can legally listen to tons of new music free by checking out best online radio stations and streaming music sites--all you need is a computer (well, and a pair of headphones if you don't want everyone at work to discover your secret love of polka). iHeard is a search engine for free music, sports, and talk radio (filter by genre, country, and language, or see what's most popular). RadioTuna gives you free real-time search and profiles stations by the music they actually play (not the categories they list themselves under). Pandora creates your own personal radio station based on music you like. Grooveshark is like a web-based, pre-loaded iTunes--search for songs and create your own playlists. Last.fm is a super social site that lets you find music you'll like based on similar users' recommendations (you can download free MP3s, too). AccuRadio has over 430 channels to choose from and Live365 has over 6000 stations...but if that super-specialized content isn't unusual enough for you, RadioBeta specializes in international stations. Finally, NPR's not just a lifesaver for your commute--you can also listen to its continuous stream online, 24 hours a day.

See also: 10 Best iPhone Apps for Music Lovers

It's a multitasker's dream: Internet on the airplane, so you can get work done or watch movies you actually like on that six-hour flight from New York to LA. Airlines are just beginning to roll out the service, and it's not available on every flight yet, but here's what you need to know: So far, Gogo Inflight Internet is the service provider to beat. It provides wireless internet on all AirTran and Virgin America flights and some Air Canada, American Airlines, Delta, United, and US Airways flights (click through for each airline's specific offerings, but in general, wireless is rolled out on certain types of planes first and is limited to flights in the lower 48 states, Canada, and Mexico). Gogo works for laptops and smartphones, including the Blackberry and iPhone. You have to create an account and purchase a session (do it on the ground to save time); Gogo's prices generally start at $4.95 for a flight up to 1.5 hours and go up to $29.95 for a 30-day pass on a single airline.

What about the other airlines? Gogo is expanding: Continental will start rolling it out on some planes this spring, reports SlashGear. Air Alaska will add it to all their planes as well, beginning this year. Southwest is using a different service, Row 44, to offer wi-fi on just a few flights so far. And what about the customarily innovative JetBlue? The airline is offering limited (limited to e-mail providers like Gmail, and Amazon.com) free internet in a trial program on one plane they're calling BetaBlue. Bottom line: If you must have wireless on your flight, make sure you book either Virgin or AirTran.

See also: How to Get Work Done Anywhere and 8 Tips for Clearing Aiport Security Faster

If you're sick of hefty cable bills eating chunks out of your checking account, it's worth taking a look at free online services to see if you can save some cash. Use BillShrink to save money on cell phone and credit card bills and to compare gas prices and rates on CDs and savings accounts. The site takes your usage patterns into account when finding the best rates for you and claims to save the average user $1500. At My Emissions Exchange, input your home utility usage from your bills, and once you reduce your home energy use, the site sells your savings as official "carbon credits" and gives you cash. Web app billQ lets you track and organize your bills, reminds you when you need to pay them, and creates reports to help you understand where your money's going. (The basic service is free; premium is $5/month or $50/year.) WhiteFence helps you negotiate with utility companies via the internet--you don't have to call and haggle with a customer service rep, because this site does it for you. You can also compare TV, internet, phone, and other service providers side by side and get deals on other things like newspaper delivery and appliance rental. And if you split your bills with someone else, like a roommate or friend, BillMonk helps you keep track and do it easily.

Making phone calls via the web can save a lot of money, and in many cases, it's completely free. Considering shedding your landline or just want to give the technology a try? Check out these services. Skype is the best-known service--free if both you and the person you're calling are on Skype, or call mobile phones and landlines at low rates. To use it, download free software to your computer. iCall lets you make free calls using downloaded software, your iPhone or iPod Touch, or a web browser. EvaPhone lets you make free international calls from your PC. With Jajah, make low-cost calls using your own phone, but you need to initiate the process on your computer; Jajah is partnered with Yahoo! Voice, offering similar services and free internet calling. A few other fun phone resources online: Make conference calls at FreeConference.com or Rondee.com (which also lets you schedule the calls via the web), video chat with ooVoo, get free wake-up or reminder calls with Snoozester, and send text messages from the web with txtDrop. And finally, Google Voice (okay, that's 11 but this one is only available by invite for now) gives you voicemail like email, the ability to read your voicemails via email or SMS, and one number you can forward to all your phones.

What's your favorite free phone service?

Apple announced it's new tablet computer in January and everyone's got questions. Here are the most important ones (for now) answered.

What Is It? The Apple tablet is called the iPad. "Quite simply it works like a hybrid between an iPhone and a full laptop," explains MTV Multiplayer. "Using the touch screen, you can browse the internet, use apps, listen to music, watch movies and play games. It won't be able to make calls, but given the size, that's probably for the best." The iPad will be able to run all iPhone apps; more interesting, says Yahoo! Tech, "is the potential for app developers to build apps that take advantage of the iPad's jumbo display." The iPad has the potential to become the go-to e-reader--Apple also announced the new iBooks app and the iBookstore, where readers can download digital titles from large publishers. This should make the "the Kindle and its once-rivals shake and shudder at their bezels," says Ubergizmo.

When it's already dark at 4 PM and snow and wind are shaking the windowpanes, don't hide in bed and wait for spring--let there be light right now with these gadgets, which will chase the winter blues away.

A few online tools to make your day-to-day life easier: Backup all your online accounts (Facebook, Twitter, Wordpress, Flickr, etc.) with Backupify--sign up free through January 31. Online backup tool Carbonite backs up your entire computer and stores your stuff securely online ($54.95/year for unlimited backup). Use animoto (free) to create really good-looking video and photo slideshows. Tripit is an online travel itinerary and trip planner--e-mail all your travel confirmation e-mails to Tripit, and the site organizes them into a master travel itinerary. Mobile app Waze provides turn-by-turn navigation based on live road conditions and is entirely crowd-sourced. Hunch helps you make decisions ("Should I buy a Mac?" "Which religion should I consider?"), providing based on the collective knowledge of the community, and improves each time it's used. And Dorthy, "the first topic-based social network," can help you keep your New Year's resolutions: Users create "dreampages," and each page searches the web for relevant content.

Related: Digital Ways to Declutter Your Life

It only takes a few minutes to help out your favorite cause online. At The Extraordinaries, take just a few minutes to complete a micro-task for a cause you're passionate about (for example, tag photos for a museum or help map kids' playspaces) via your mobile phone or computer. Here's to doing good while you wait in the checkout line! At Do Something, pick a cause (like animal rights, poverty, or violence and bullying), then just answer a couple easy questions (who they want to volunteer with, where, and for how long--even if it's online-only and just for a minute) and the site generates a list of ways to take action. While the site's aimed at teens, anyone can find ideas here. JustGive is a charity search engine, searching 1.5 million charities to help you find the perfect place to make your donation; you can also give charity gift cards and create a charity wedding registry. Want to take your career in a new direction? Idealist.org is Craigslist for doing good: Search for job listings at nonprofits and find internships and volunteer opportunities (and if you already work at a nonprofit, consider participating one of idealist.org's nonprofit career fairs).

When you perform searches at the Yahoo-powered EcoSearch, you help plant trees in the Amazon. replyforall creates a customized e-mail signature based on your cause of choice. When you play the word game at FreeRice, for every right answer, the site donates 10 grains of rice to the United Nations World Food Programme. And finally, you may know about them already but a reminder won't hurt: Click once a day at the Breast Cancer Site, Hunger Site, Child Health Site, Literacy Site, Rainforest Site, and Animal Rescue Site. Who knew a break at work could help you do so much good?

Facebook apps aren't limited to playing Farmville--they can actually be useful! Here are a bunch you might want to install: Divshare lets you send documents, photos, music, and video to your friends individually or post them for download from your profile. Dopplr: Where Next? allows you to share your trip schedules with your friends and colleagues (and see when your travels overlap with theirs). Space Translated translates and displays your wall messages in over 20 languages. Status Shuffle lets you pick and choose from the funniest Facebook statuses--find one you like and use it. My Diet lets you track calories, activity, and weight (and you can compare your data to your friends'--maybe competition is the key to a successful diet?). Birthday Calendar ensures that you'll never forget a friend's birthday again; you can receive cellphone and e-mail alerts and send virtual cards and gifts. Professional Profile separates your professional info into a separate tab on your profile and lets you tag and consolidate your business contacts. Telephone allows you to call, IM, or leave voice messages for your Facebook friends. With My Money, manage finances securely from your Facebook profile. And Zimride Carpool helps you arrange ride shares--so you can actually meet up with your Facebook friends in real life.

Related: Online Tools to Make Your Life Better

The ecosystem for Twitter add-ins is incredibly rich. Here are a few that are especially useful. Twittercal lets you connect your Twitter account with your Google calendar. TweetBeep sends you an e-mail alert when somebody tweets about you (or your company or anything else--like Google Alerts for Twitter). Remember the Milk for Twitter lets you interact with, and get reminder tweets about, your tasks. Trendistic and Twitterfall show you Twitter trends and trending topics. Twubble searches your "friend graph" to help you find more people to follow. Send an e-mail to your special Twittermail e-mail address and it will be posted to Twitter. Twitbin brings Twitter straight into your Firefox browser. HootSuite, "the professional Twitter client," is great if you use Twitter for business--among other things, it lets you schedule tweets and manage multiple accounts. With TwitRes, share your resume on Twitter, preserving its original formatting. And TwittEarth is a really fun way to visualize tweets from all over the world.

Related: 10 Really Useful Facebook Apps

It's no secret that it's easy to make New Year's resolutions, but hard to keep them. Bloggers offer memory hacks and other tips to stick to your resolutions this year. The Happiness Project offers five tips for planning effective New Year's resolutions, for example: "Ask: 'Am I a "yes" resolver or a "no" resolver?" Some people resent negative resolutions. They dislike hearing 'don't' or 'stop' or adding to their list of chores. If this describes you, try to find positive resolutions." Unclutterer has ideas on brainstorming resolutions and will be posting about "how to create and organize a schedule for achieving your difficult goals" in the coming weeks.

Related: Get Ready for 2010: Goal-Setting for Beginners

The TSA, weight restrictions, new draconian in-flight regulations ... today's air travellers need all the help they can get. These tiny items are always great for the road warriors or world travelers on your list (or yourself for that matter). Great for late stocking stuffers too.

Related: Holiday Travel Survival Sites

Bringing your netbook along when you travel this holiday season? PCWorld's Mobile Computing blog has a guide to using a netbook on a trip, including fun games that can run on "wimpy netbooks." NetbookBoards.com likes the iGo Netbook Charger, which is "compatible with nearly every netbook and comes with a USB attachment and iGo power tip for phones and iPods." CNET says this netbook messenger bag is one of the most comfortable laptop carrying cases they've tested. Digital Trends picks its top ten netbooks. jkOnTheRun says the beta version of Amazon Kindle for PC (so you don't need a standalone reading device) works well on netbooks. The site also predicts what's in store for the future of netbooks. I4U reviews a dual WiFi/Bluetooth antenna. GigaOM has ten ways to trick out your netbook for free. TuneUp offers ten ways to optimize your netbook--for example, "browsing in fullscreen mode (F11 on keyboard) is much more comfortable on the tiny screen." And don't miss Forbes.com's "Pimp My Netbook": "Ten somewhat illegal, unauthorized and totally fun things you can do with a netbook."

Should you be using Twitter to boost your career? Of course, now let's get started. First of all, don't miss Twitter 101 for business, the official company guide. And Twitter and LinkedIn have now joined forces. Chris Brogan has 50 ideas on using Twitter for business, including "Share the human side of your company. If you're bothering to tweet, it means you believe social media has value for human connections. Point us to pictures and other human things." Mashable lists the 40 best Twitter brands and the people behind them, writing, "No other medium gets you inside a business or brand [quite] like Twitter." Duct Tape Marketing lists some business applications you can use on Twitter--get a reminder Tweet when you have a meeting, for instance, or post a job opening. Small Business CEO also has 27 Twitter applications your small business can use today, and a follow-up post with 31 more apps. Finally, Copyblogger shares practical stories of real people using Twitter to grow their businesses.

No need to haul out the handheld calculator (if you even have one anymore)--you can make all kinds of cool calculations online. For the basics, don't forget the calculators built into Google, and figure out someone's time zone at Time and Date (and if you're planning a trip abroad, don't forget about this universal currency calculator). Moving away from the math homework, figure out your life expectancy at Living to 100. Use Self's calculators to calculate your ideal weight range, BMI, and calorie needs. Find out your target heart rate at MayoClinic.com.