Freaking out over stuff in private can be fun, yeah. I do that with my friends, too!

Doing it public is okay, too, but...

It's so much easier for that to build up into something unpleasant and not really very fun. I think that's what's going on with those MS communities - it built up into something rather unpleasant a long while back and it's pretty off-putting if you don't already have a serious chip on your shoulder about Mary Sues.