I worked a lot before registering. Minor edits, stuck to the Roleplaying articles. Wrote the current revision of the Black Market Dealer subsection. Made some edits to Mysticism too, but other than that, not so much.
My area of knowledge is within the realm of Magick, specifically the 6 casting schools. I'm not able to tell you why Light is part of the Illusion school and not its counterpart, Alteration, but I hope that eventually I can.
I am also an avid roleplayer. One of those guys who's a stickler for realism and cleans his house by swishing a broom against the floor.