Here is idea of socialising exam or even exam web 2.0 :)
During the course students can make guess what could be on the exam, using feedback web from. It will help to:
1) Summarise entire course for student, understand main topics and deepnest of details
2) To teacher receive student "understanding" of course
3) Form exam questions easily, if questions are good teacher could accept it and will be automatically added to Exam questions DB.
