Alla plays WoW. I've known that since I played WoW, back during its first few months.
I'd guess that WoW's customizable interface is one of the big reasons - EQ2 has some interface customizability, but I have yet to see anything really mind-blowing, like the Price Tracker mod I used. It kept a log of all AH and vendor prices for everything that was listed on the AH - compiled from what you saw, not some central database. It was excellent for deciding what loot to keep and what to junk if you weren't done adventuring, and your packs were full...