Well -- judging from the responses here, I think Dooky's point is still as valid as ever, about needing a woman present in the context for the size difference to mean anything to many of us.
Pitbull, I don't think there's any doubt that there are tons of members here that aren't straight and that the place (if you by that mean the site) is more than big enough.
But there's hardly anything wrong in specifying what one wants in a particular thread, is there? Especially when he actually started this one... I think some of the problem is the name of the thread itself. "Big/small comparison" is kinda inviting for all kinds of size comparing posts -- perhaps it should be renamed or restarted under something like "Big/small threesomes (hetero)" or "size humiliation", something like that, if you want to keep it on that topic.