When I first registered, it was as my AOL screen name, MZDavis. DW Lauri was posting as often as I was under that name and we managed to confuse people thoroughly. We were moderators under that same name for a while, but after the DIS moved from Infopop to VBulletin, we decided to go with separate names.
I'll let Lauri tell you about her name later. I was trying to decide if I should keep the MZDavis name or go with something different. After asking on the Collectors board for suggestions, one of the members, Fantasmickey, suggested Obi-Wan Pinobi, combining two favorites -- Star Wars and Disney pins.