Yeah I've been thinking that would be good, sometimes you want to talk to a user, but there's no messaging or PM feature. As for flame wars, I'm sure people will take the high road and ignore anyone trying to start one. I don't know about it being public, but PMing would be nice.
I mean when you think of having threads and such, you risk the idea of "private" (even though it'd be public) groupings of people to organize whatever, excluding others, which is what's good about Meta and all.
