Developer from Asus
We are fixing my library app bugs, after testing it, and then planning to provide an update around 2~3 weeks later. More UI improvement and be consistent with Honeycomb UI. And we are adding to support posting what you are reading and your comment onto facebook sharing with your friends, too.
Further more, months later, we are going to provide users to store all their highlight / comments on the books into cloud storage, so, even users purchase another Asus device, he can still see all his history comments on his books before.
For the U.S. book store, we have Txtr already, and we are going to have another book provider very soon.