New Social Networking Platform For Teachers Mixes Google Docs, Ning, Twitter, and Facebook

Diipo connects you the teacher with your students by making it easy to communicate with your class. Diipo also connects you with other educators and your class with other classes. Featuring an easy-to-use and familiar user-interface similar to Facebook and Twitter, Diipo helps students stay connected and engaged.

http://edudemic.com/2011/02/diipo-beta/