Web sites that allow members to share info and collaborate are catching on fast. Here's a tour of key examples
You may have heard of Weblogs, but chances are wikis haven't hit your radar yet. Both are rapidly evolving examples of what some call social software -- programs that foster a connection to other people and, if they work well, a thriving community. Whereas blogs enable individuals to post a regular chronicle of their thoughts and interests online, wikis are fairly focused Web sites compiled and constantly edited by a dedicated group of people -- all of whom can not only post material to the site but edit it at will.
[BusinessWeek Online]