Hm, that site seems interesting, but I'm not too thrilled about the idea myself. Seems like it needs the participation of students and professors-I really doubt that professors will find the time to release course materials under their accounts on this site. And, the idea about networking within classes.it's almost like trying to address something that really doesn't need tinkering. I'm a little skeptical of those revenue projections ($8 mil in 15 months?!) but, hey, I could be wrong. I'll keep working on the specs document and send it out when I get all the rough stuff down.