I think we're doing okay on questions and answers -- the volume could be higher, but that will change with time. (I hope.) What we really need is more people involved in the community -- people talking here in meta, people who will guide new users into asking better questions, and in general making us moderators superfluous. (Keeping my fingers crossed... that's how the SE sites are supposed to work.)
All that said, I think a second wave of publicity is in order, targeted specifically towards people who will help keep building the community. What are your thoughts on this? Do we all need to blitz Facebook and Twitter? Put up posts and comments on forums and bike blogs, reading "Help us build a Q&A community"?