We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Google Play Books?
I've been trying to figure out what's up with the Google Play Books partner center for a while - since, as far as I can tell, Lulu doesn't get us in there. As far as I can see they basically shut it down and are pretending it'll reopen with no dates or hints or... well anything.
Anyone hear more than that, or is it a very firmly sealed door?