Danah’s excited about Webnote. It looks kind of interesting. I’m sure I had a student a few semesters ago who was working on something that looked just like this. Without the ability to create connections when you want them or otherwise link notes, I’m not sure how much I would use it in comparison to some of the other brainstorming tools I’ve seen. I personally like to make internal sequences and various associations even when notetaking on the fly.