#5 - March 12, 2011, 4:59 a.m.
To be fair Blizzard didn't actually attend the previous PAX East in an official capacity. NVidia wanted to display the game so we sent a couple people out to make sure questions could be answered (it was still in beta at the time). And I guess we were feeling bored or masochistic and decided to throw a fairly impromptu mini tournament. Which was way more work than it seemed it was going to be.
Anyway, we have BlizzCon and we think that's a pretty good once a year showing and celebration of our games. If we ever intend to show at any other events we'll let you know beforehand.