I spent about twenty minutes googling around trying to find a central repository/library/listing of games available/ported to it... with no luck. That would probably be important for gaining traction.
The OpenPandora is basically a response that the existing solutions (such as the GP2X Wiz) just aren't that great (which is true, I have a Wiz and I really don't like it). The OpenPandora will almost exclusively be used to run emulators, a smidge of web browsing, and that's about it.