What this site has to offer right now, compared to other audio production q&a sites, is a pretty uniformly civil and helpful tone.. StackExchange sites are not "forums", and they don't have the ego-puffery/self-promotion and clubbiness that is such a part of the character of, for example, GearSlutz.
On the other hand, the level of sophistication of the audio discussion here is still quite low. There are a lot of smart people on GearSlutz, and you can pretty much guarantee that somebody on that site will know the real answer to almost any audio, production, or gear question. Here, not so much, yet.
There's a bootstrapping process of getting knowledgeable answerers involved by having other knowledgable answerers already there, which will raise the level of questions that get asked and answered. At a certain point, you start showing up in Google results for common questions, and that's a self-reinforcing cycle that leads to successful sites like Stack Overflow (that's how I got involved with Stack Exchange sites).
Right now, this site needs to attract more people who aren't necessarily experts but have practical experience with music and recording, are pretty good writers, and don't mind helping newbies.
A few more experts wouldn't hurt, though... Back In The Day (tm) it just took a few folks of the caliber of Mike Rivers, Scott Dorsey, and Bob Katz to make rec.audio.pro an amazing resource for anyone who wanted to learn about recording and production.