Outdoor concerts, European music festivals, keggers -- whatever your concept of summer fun is, GameStop's adding its own EXPO to the list. Previously the exclusive province of its own employee horde, the gaming retailer's opening up its annual conference to the pasty-faced public for the first time this year. You'll have to be a PowerUp Rewards member to get an invite for the video game-centric shindig, but after that, entry is merely a two-tiered level of commitment away -- general admission costs a mere $35, while the VIP perks'll ring up at a $100 premium. The happening's set to take place
