Well, the problem is, once you do it, you're kind of stuck. In the incestual (is that a word?) world of jazz bulletin boards, jazzmoose is pretty well known, but who the hell ever heard of Mark Combs? And once you're known by that name, you're just as "googlable". The different names on different boards I don't understand, although I used "Mrs. Anne Elk" on JazzCorner for a while. I don't think I fooled anyone, but then it wasn't my intention to do so.
I think I recall Mrs. Elk--she was a dear.