I had that happen to me once. I won't mention thread or name, but I had the unfortunate experience of asking someone to back up some vague claims they made in a post, (i.e. challenging those claims as unfounded) and instead of replying to me they edited their post in such a way that made me look like a rude snitty idiot, as well as rendering my post nonsensical. But that was a long time ago, about two years now. I'm not bitter about it at all....
