Hm, time really flew the last few months between edupub and a few other things. Can you tell my January was a bit on the slow side?
Anyway, to get back in the swing of things, I just wanted to note that http://www.idpf.org/forums is still active for asking EPUB questions. When the EPUBZone microsite was added the forum link disappeared from the main menu — and the link from the mircosite goes directly to the EPUB3 forum, making it appear the other three might have been retired — but the all the forums are alive and well, if a little harder to get to right now.
I’ve reported the problem, as have others, so hopefully full access will be restored from the IDPF site soon. In the meantime, though, don’t hesitate to use them on the idea they’re no longer frequented.