Right around my high school days between 99-03 I began posting on the dccomics.com message boards that no longer exist. From there I went to the geoffjohns.com forums that were for his work and a host of other writers [I think it's actually comicblok.com now] that had a fan works section. FanFic was not allowed [because of the pro writers affiliated with the forums], but for some reason fanfic in the context of an RPG was fine. My first RP was the Justice Society RPG #3 during a time when Geoff Johns was killing it on JSA for his first major run. I played in another RP or two on that site with the same JSA theme  and GM'ed at least one until starting some forums with a guy who I only remember as 'Steve' called the Krypton Protocols. I ran like my second or third roleplay ever [a Justice League RP] on those forums with posters from the DC comics boards and the Johns forums that was around 15 or 16 players. 

True story, the guy that played the Flash and the girl who played Jade got together and met in person. Had a Star Wars themed wedding and a baby. 

After the shine wore off of those forums and Steve broke contact [or maybe it was me, I had a few different AOL accounts at the time] I migrated to thegreenlanterncorps.com forums where I ran a handful of Green Lantern RPG's. At some point I followed a troll over here and I liked the scenery so I stuck around. I was maybe in 6 or 7 forum based RP's before coming here. 

In my youth I was all about the Final Fantasy Super Nintendo RPGs, Mario RPG, and playing D&D with my older nephew. 

~KL~