Every once in a while, someone says that a celebrity is accessible
through "The Net"; or, even more entertaining, an article is forged
to appear to be coming from that celebrity. One example is Stephen
Spielberg---the rec.arts.movies readership was in an uproar for
two weeks following a couple of posts supposedly made by Mr.
Spielberg. (Some detective work revealed it to be a hoax.)
There are a few well-known people that are acquainted with
Usenet and computers in general---but the overwhelming majority are
just normal people. One should act with skepticism whenever a notable
personality is "seen" in a newsgroup.