The Stacks by Scholastic
As publishers scramble to find their place in this new digital reading environment, Scholastic has created something very interesting, and maybe very smart. It's called The Stacks. It's still in beta, but it's a safe place for kids to gather, find books to read, games to play, create a fun profile and chat about books on message boards. In other words, it's got just about everything a young reader could want.
The limitation is, of course, The Stacks will only be offering books Scholastic publishes (I think) but they're a big house and that's still an enormous selection.
If you check it out, will you report back and let us know what you think?