Most of us know that Internet communities and social networking sites are popular, but how do blogs, podcasts, wikis and companies like Digg and MySpace work? Learn more in the Social Networking section.
Shopaholics, crocheters and music addicts meet up at these online spots to discuss their hobbies with other equally obsessed junkies. What are the five most intriguing niche networks?
If your Facebook status update reads, "Leaving for France!" you're not just gloating about your trip. You're letting everyone know that your house will be empty for about 10 days. Bad idea.
It's the age-old falling tree question: If you tweet and no one is around to hear it, does it make a difference? How can you attract followers so that your tweets aren't made in vain?
When fake Christopher Walken tweets, "The neighbor's cat is back at the window looking in at me," followers snicker. But do the real celebs think this charade is funny?
Do you sometimes wonder who's behind all those witty tweets and tinyurls? It might be nice to finally connect a username with a face. And that, my friend, is the beauty of the tweetup.
Web sites like Facebook and Twitter are designed to keep reeling users back into their realms. And it works. How bad are our addictions to these online social scenes?
Before you start chirping your innermost thoughts on this social networking Web site, take a look at this list of tips. What does a Twitter beginner need to know?
If you're really popular on Twitter -- and of course you are -- you may have trouble managing all your followers effectively. Which Twitter add-ons can help you out?
If you follow the right feeds, Twitter can keep you up-to-date on everything from the president's job to what Oprah ate for dinner. Which Twitter users are the most intriguing?
Some people are just too busy to do their own tweeting. So they have someone else do it for them. What famous people's tweets aren't coming straight from the horse's mouth?
One of the applications on MySpace enables people to post anonymous messages on each others' pages like, "I have a crush on you," or, "You're really ugly." Sound like fun?
When a bunch of Twitter geeks get excited about the same thing at the same time, their chatter can crash the whole service. And that's when the dreaded Fail Whale appears.
NBA star Shaquille O'Neal told his Twitter followers to "Shhhhhh" during halftime of a Phoenix Suns basketball game. What other weird statements do celebs message out to their fans via Twitter?
YouTube has taken videos on the Web to a new level. With this image gallery, take a look at the interface and famous people on YouTube.
Digital photography has made it inexpensive and fun for people to document their lives. How does Photobucket store and show so many photos and videos?
Have you ever stumbled upon a cool Web site and shared it with your friends? StumbleUpon.com is an online social network that allows you to do just that with millions of users.
Chat rooms give us the chance to discuss anything and everything with people around the world. How do you get started, and what do you need to watch out for?
The online social network Friendster connects you to your friends and your friends of friends. Can Friendster help you to find a job or to reconnect with that special someone?
If you've got something you can say in just a few characters, you can reach lots of people with a single Tweet. How has Twitter changed social networking?
LinkedIn is a social networking site geared toward professionals where you can look for a job, find sales leads or connect with colleagues. So how is it different than all the other networking sites?
A social networking site originally created for Harvard students, Facebook is now open for anyone to join -- and it currently has 750 million active users. What features have made it such a big success?
Second Life is a three-dimensional virtual world where you can live in a castle, fly to dance clubs and change your appearance with a click of your mouse.
Online social networks are a great way to meet people and keep in touch with friends. Learn more about online social networks in this article.
Can Facebook get you $10 million? It can if you're a software developer who's generous with his ideas. The fbFund is offering grants to creative developers, but how do you get one? And if you're not a developer, how else can you make money on the Web
A study suggests that some businesses are losing $260 million a day from employees on MySpace and Facebook. Should companies block social networking sites altogether?