Actually someone should probably revamp the FAQ a little. It has no mention of the source release (a big part of the current reasoning for no FS3), and it's a bit outdated when it comes to some of the specifics. The FS3 question actually was allowed under the current FAQ... (It was written by Setekh, for pete's sake, it's got to be old no matter how you cut it) The other thing that would be useful would be to have the FAQ displayed whenever someone registers, if that is possible with the VBB scripting. But I agree, there's not much more annoying than having some new guy come in here asking all of the questions that have been asked a million times.
On the other side of the issue, however, we should not be so quick to criticize the n00b's as they try to get in to the community. The search feature can be extremely unhelpful when it comes to older topics (I still can't find some of the dialogues I had when I was a newbie, so I could understand how one could miss something like FS3 discussions. There really haven't been any in a while that have been much more than a flame fest). I'm seeing a lot of people coming in that seem really enthusiastic about the game and its modding potential, and we don't want to scare them off. I see so many people asking for modders for their campaigns (FREDers most especially) and it will be the new people who will help fill the void. However, I think that making a "rules" topic or page or whatever would help this issue as well.