And there's also the fact that it's necessarily uneven. The poster has identified herself. The commenter has not. While either an all-identified or all-anonymous set-up has decent debate potential, a set-up in which one side is identified while the other is not is, shall we say, problematic. And when the first point in the debate (the initial post and/or comment) is an identified one, then it is incumbent upon anyone who wants to join in to join in under the existing set-up and not try to shift the rules for his/her personal benefit. That's weaseling.