What does this mean for the next-gen MMO currently roasting slowly at Blizzard's complex? We don't really know. If we look at other games that have had advertising, it's usually in the form of billboards or sponsorships, featuring products that you and I know of. The possibilities for where ads could go within the game world of an MMO are endless, but it does preclude some settings and time periods. Intriguing, no? Something to freak out about? Definitely not.