Actually, I've been wondering something similar.
Assuming you keeps the forums in their current scope (*cough*), are you going to keep our posts or not? If you don't, how will our forum post AP count work? As an example, if you were to erase all the forum posts, I would drop to just below 1000AP of my current 3700 or so. While not all that important, that would put a dent in my e-go, so yeah.