From Joystiq:

Microsoft’s in-game ad company, Massive, has announced that it will be providing ads for several major publishers this fall, namely THQ, EA and Activision. Massive will supply ads for EA’s sports lineup — including Madden NFL 10 — and Need for Speed: Shift. For Activision, the company will provide ads for the many upcoming Hero games, including Guitar Hero 5, DJ Hero and Band Hero, as well as Tony Hawk Ride and Blur. There will also be ads in THQ’s MX vs ATV Reflex as well as its smash hit UFC 2009: Undisputed. Also, expect ads in Ubisoft’s Splinter Cell: Conviction — projected on the walls, perhaps — when it launches next year.

You can take a look at all the details on their official page here, with an interesting deal with Blizzard and the revamp Battle.net probably kicking off with the hotly-anticipated Starcraft II. Recent integrations include a summer-long Sprint campaign for 1 Vs. 100, and in-ring and banner ads in the latest edition of EA’s Fight Night.