IT.com is a more "buttoned down" site. The topics are specific, and non related material usually goes over like a lead ballon. Most of the posters here are IT guys.

RR-AX is a more open clubracing/ autox/ HPDE /grassroots competition site, born from a bunch of guys who got pissed off at the Honda Tech site, and went on their own. So, a good percentage of Honda guys.

off topic material flies just fine, and the discussions are broader regarding racing stuff. IT is talked about all the time, but often in relation to Honda challenge, koni Cup, NASA, etc.

the players there all know one another...to a large degree..and can "poke some fun" at one another.....but they don't tolerate newbies dumb questions well. Thick skin needed if you post something stupid. And there are some girls who post, but off color jokes towards them are pretty harshly viewed, unless you go way back.

I've met lots in my travels, and had a blast with them in person.., a community of sorts.