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Mobile apps that use your location to offer services are no longer new. But are they truly useful to businesses? We look at Facebook, Foursquare, Google Latitude and Yelp to see how they're doing.

Before there was the World Wide Web, millions of people used online services, like AOL, CompuServe, and GEnie to work with each other, gossip, and share Star War jokes. Join us as we journey back to a time when 2,400 BPS modems were "high-speed"; when you had to worry not about your bandwidth cap, but with paying dollars per hour of connect time; and when Internet porn was rendered in ASCII drawings.

Like it or not, he switch is coming within "the next few weeks." Here's everything you need to know.

While standing around the water cooler in the IT department, perhaps you debate with a coworker about whether LinkedIn is better than Facebook. Or you argue with an end user about whether they can use their own device on the corporate network or can only use what is provided by the company.

Facebook users love to rage about redesigns, and new changes to the site’s News Feed have already triggered the predicable response. Users are complaining about the changes, which emphasize algorithmically important status updates instead of recent posts, saying that they don't want Facebook prioritizing status updates, and that they'd rather just see everything in chronological order.

If you have even the slightest interest in the royal wedding, there are ways to follow the event and keep your geek pride intact.

Imagine buying groceries and, just when you're about to pay, being told that your food bill has been paid already. By Yahoo! That's what happened to hundreds of customers recently at the Mission district Foods Co, a grocery store in San Francisco. Yahoo representatives stood at every cashier station, paying up to $100 for groceries until they had spent a whopping $10,000.

Over half a billion people use Facebook around the world. It is the single largest phenomenon of human connection in history, not to mention the biggest thing ever to hit the Web, and a source of enjoyment for millions. But it's becoming more and more of a love-hate relationship. We love using Facebook and other online social networks, but we hate the ever-increasing privacy and security concerns.

The privacy of the intimate social graph rests on the vagaries of localized judicial interpretations of a creaky 24-year-old law.

Facebook has been branded by many as a notorious waste of time, and welcoming these seven apps to its collection certainly hasn't helped its reputation. From photo-altering apps to random name generators, Facebook's Application Directory is chock full of absurd add-ons.

Learn how to do it, as that's the only way to learn how not to do it.

Social networking has a dark and hilarious side of ill-conceived criminality. Here are some of Facebook's dimmest crooks (and smartest detectives).