how do you avoid licensing all the content you're making available for annotation? If you're going to annotate literature that's under copyright (for example) won't you pretty much have to provide the base work to anyone looking for annotations?

Or is the idea to build up content until you get slapped and then license it back to existing licensees like amazon or rhapsody?

Looks a bit like the latter given the pretty broad sublicensing in the TOU, "Hip Hop Wikipedia" except, you know, for the part where everyone can use the information.