I am building an educational service which will help students to study virtually and collaborate with each other students. I am starting with one university in San Francisco Bay area. Using this service, students can connect to their classmates without becoming friends on facebook or sharing their email addresses. They can ask questions to their real class mates, and share notes with them. If a student asks a question, it will go to all their classmates. Also, students can use screen sharing when they are not sitting with each other. I have already uploaded the real classes (with professor names, timings, etc) on my system.

My website: http://goo.gl/4sGIK

I would students to sign in with their facebook credentials. However, it seems that the students do not want to sign in using their facebook credentials ? Also, a lot of people drop off during the registration process. I would really if you can review the site and let me know your feedback.