>From: Michael Best <themikebest@gmail.com>
>Just had it pointed out to me "luser" was just internet slang, and not really an insult. Sorry I got a little defensive after that.  

My recollection is that "luser" originally (40 years ago) was supposed to stand for "logged-in user" in Unix.  But it presumably survived for its humorous connotations.
           Jim Bell