As of today, Answerhub is gaining about 30 posts every 10 minutes. This is leading to great difficulty in being able to field questions, let alone asking them. People with important questions are turning to IRC and the Forums to get questions addressed, because they are not feeling comfortable with using AH for anything beyond a comment.
I am not sure what we can do to improve the use of any AH/Stack Overflow model in this situation short of some absolutely overwhelming work in moderating things, but we have a pretty significant problem if the purpose of AH is to be fully realized. =\