Well, you guys know how we feel about World of Warcraft. It's a pretty sweet MMO. It's had its rough patches with community feedback and with supporting such a huge number of players, and there's always the grousing over class balance and bugs, but WoW still seems to be the most popular one out there. Blizzard announced Battlegrounds a while back, but it's had to sand down some of WoW's roughness before it could get right down to it. I'll bet that BG has been ready to go for a while, and according to Blizzard, it was in the works long before WoW was even released.