Internet is full of possibilities of tricks and fraud. I would be cautious of any unusual request what involved money being asked or somehow extraordinary deals suggested.
I often find it quite weird that people do change their e-mail addresses frequently making it nearly pure assumption that they guy who writes you is the same guy. I think it would be merely someone wanting to spend time on creating disinformation chaos, and it would happen.
Edit: and when original forum settings was done, I took some measures of restricted names, like: Admin, Root, Mikko, Aspa, Freak, Animal, Jew, Nigger, ... and so on.. hehe.. Bunch of things what can't appear on someone name. For sake of clarity or for sake of keeping cheap vulgar provocateurs in leash. There ain't possibilities to prevent all sort of variations happening (Nlgger, ANlMAL, etc) other than kick out & ban when seeing it happen.