I'd have to ask, okay with whom? Most site rules cover banning and what happens and how the site owner feels about it. That's all that matters to me.

If someone (like Pickle :-) were to come back under a different name (Gherkin? :-) they wouldn't be a different person and either would get in trouble again I think, or would be "recognized" and individuals/the site would respond to them from that information.

If they didn't get in trouble and didn't get recognized; I wouldn't have any problem with responding to them as whoever they represented themselves to be "this" time as I don't know who anyone online is in reality if I haven't met them face-to-face and over a longish period of time and I only respond to how someone represents themselves "now."

I was watching "Judging Amy" this afternoon and her mother made the statement to her son/Amy's brother, "We're all just a mass of contradictions and death doesn't change that." Whoever one represents themselves as being, I take at face value until I learn otherwise but even then, I believe people have lots of different aspects, roles, "beings" and I do the best I can to relate to the other person as wholly as I can.