If I remember the biggest draw away from Ramva was when shoptalkforums.com opened. I have not been there is a long time, but it is probably still growing strong. Thesamba and cal-look are also popular forums where some of the people are now that used to post here.
...it seems to be a pretty even split between the 3 groups on past RAMVA regulars. I just frequent them all....though I mostly just lurk in RAMVA as of late...