Since there is very little aerobatic discussion here, I hope this will not be perceived as competitive (don't intend that) to this site, but FYI for any acro junkies about this new dedicated aerobatics forum that just launched 3 days ago by Jason Baker (also runs seaplaneforum.com). As with any forum, it is what you make it. And since RVs are aerobatic...
http://www.aerobaticsforum.com
http://www.aerobaticsforum.com