Very cool announcement. It will be interesting to see if textbook prices will drop? I have been super impressed with some books on the iPad and others are super lame. With the new authoring tool it will be interesting to see what we can do with our own content!
The end product of this rss to javascript converter is the nicest I've seen. You have to register for a free account. You pay money and you get extra features.
Christie found a better way. Diigo has their own, highly customizable, tool called link roll or something like that. It updates instantly and looks clean on the page.