That would be interesting or nice even. I'm trying to recall if I've made any horrific comments here. I know I used to leave all sorts of lame or mean comments on blogs years ago. . . .but I think I've mostly stayed away from that on Hubpages (crosses fingers - knocks on wood)
There is more to it though - suppose I got made at you, and decided to just be a butt about things, and went and deleted all my comments from your hubs - well, that would start a huge chain reaction - as then your comments in reply would no longer make any sense, and neither would other comments that fell on the thread later that fed off of my deleted comments and your replies to them.
So. . . .I think I'll just say that I am happy enough with the current situation, but I wish that we had a direct "reply" feature so that I could hit "reply" on other person's comments rather than have to use their hub name and address them directly.