It is something I have thought about. Smack talk can be fun, but not at the point that you may actually be hurting someone or making a emotional problem worse. If I suddenly feel as if there is an issue going on with the person I'll back off immediately. It doesn't happen often but I do think it happens. It is a serious concern and I'd contact a mod if I thought something was up. I have contacted a mod to report a post once in over 10 years and it was because of concern I had for a poster (not on this board). I also sent a private message to two other posters and asked them to back off. Smack isn't fun if you are hurting someone.