Well done and good luck, but it is hard to believe this library will change the dynamic for GData. I tried searching, but for the life of me, I cannot find an

Well done and good luck, but it is hard to believe this library will change the dynamic for GData. I tried searching, but for the life of me, I cannot find an actual web application or a service that is based on GData. Yes, there are all kinds of importers from Google account that lets a 3rd party service spam your friends with invites. But is this the only use-case Google is trying to support? You'd think that they really do want developers to build on their platform, no? If so, why isn't there a more pick-up?