The Read Write Web, one of those top quality blogs, has a rundown on Web Applications for Students. This list is long, thorough, and sorted well. The article goes thru replacements for office, notetaking apps, mindmapping apps, useful sites for studying, and so much more. And, the best part the article starts with this:
I went to a school that utilized a Virtual Learning Environment called WebCT (since absorbed by the Blackboard company), and it really wasn’t very fun to use.