Just a few years ago, building a web community meant adding a chat room or forum to your web site. But that's all changed.
Today's web communities have branched out into a whole new breed, one that is just as active on the Internet as they are in the community.
Known as social bookmarking, these community sites offer users to share the best of the web as well as interact with each other. Find a cool article on your favorite celebrity? Bookmark it and share it with the world. Users also have the opportunity to give "props" to those that really search out the good stuff. Using a variety of voting systems, readers can "vote up" or "vote down" a particular post to rate its worthiness.
For more on social bookmarking, check out this article in Pop Culture Trends.