So, you guys are first. And with that distinction comes some random craziness. We haven't established exactly how some of the community-specific content is going to get created. We know it is going to take some experimentation and that experimentation is going to come from the first communities. So, here's your chance. Make history.
How are you guys going to come up with a functional FAQ page well before the end of the beta?
The process should allow for the FAQ to be iterative (it changes over time), it should be communal (don't expect one person to write it) and the process should be lightweight (i.e. don't ask for a formal, overwrought FAQ-generating web application - see if you can use the tools you have here).
So have at it. Make suggestions about procedure and methods here. Keep on top of this thread: comment, vote, and provide lots of feedback. But don't get too caught up in process. Keep your eye on the end-goal - to have a functional FAQ page with the least amount of rigmarole.