Banned means banned.... if a banned user wants to contact a mod they can email, but leaving things like PMs accessible makes it less of a deterrent, and a ban doesn't seem much of a deterrent even now considering the number of repeat-offenders that keep going and coming back.
yeah...I tried that when I was banned. Sometimes it's harder to get in touch with mods then you'd imagine. But I guess it was a good thing, I spend a little less time now on this site then I did before. Now I can concentrate on failing my classes again.