Notemesh

NoteMesh

URL = http://www.notemesh.com/notemesh.php?a=home

"NoteMesh is a free service that allows college students in the same classes to share notes with each other. It works by creating a wiki for individual classes that users can edit. Users are free to post their own lecture notes or contribute to existing lecture notes. The idea is that users in the same class can collaboratively create a definitive source for lecture notes."