Popular social networking site that spread from its origins in the music/band scene to college, high-school, and even middle-school communities:

“MySpace is an online community that lets you meet your friends’ friends.
Create a private community on MySpace and you can share photos, journals and interests with your growing network of mutual friends! See who knows who, or how you are connected. Find out if you really are six people away from Kevin Bacon.” (from About on MySpace.com)

Starter Links: Transliteracies Research Report By Garnet Hertz