Arguments (especially of the heated kind) are a risky business in the real world, the more so here where we know little about most users.

I couln't agree more.

There is also a certain level of impunity here that along with anonymity makes confrontations even riskier.

Again, I couldn't agree more and I think a lot of it has to do with the fact that people tend to forget that "inside" that computer screen, behind that name, is a warm-blooded, feeling human being.