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.
What is revolutionary about Second Life is that it's not only legal to make real money from your character's virtual endeavors -- it's encouraged. The exchange of your accumulated virtual dollars into "real" dollars is built into the system.
When MySpace claimed there was no way to patrol its own profiles for sexual predators, Wired News editor and former hacker Kevin Poulsen took it as a challenge.
Digg.com is a user-driven news Web site that lets people find, submit, review and feature stories from every corner of the Web.
Blogs serve as online journals and communities, often linking to news stories and other sites. Learn the basics of blogging, explore the blogosphere and find out how to create your own.
Social networking and e-commerce may be all the rage, but many internet pioneers originally used the Internet for sharing ideas among large groups of people. Newsgroups were fundamental to early internet communication, and they're still good sources of information today.
Think you struggle to keep up with your Twitter feed? From live video on Facebook and YouTube shows to snaps and Instagram posts, the White House is all over social.