Wikipedia Vs. Facebook
Here's the dirt on how these objects relate to one another:
Superficially there is very little in common between Wikipedia (an online encyclopedia) and Facebook (a social networking site), but actually, one can argue that Wikipedia laid the groundwork which was necessary for the very concept of social networking: Wiki's founder Jimmy Wales invented the whole idea of Web 2.0, of dynamic, user-generated, user-edited content, the backbone of Facebook and all other Web 2.0 sites that followed.