Activision's booth yesterday played host to more than just sweaty gamers and DJ Hero videos: Call of Duty 4-developer Infinity Ward was rewarded with a Guinness World Record for "the most popular online console game" citing the fact that it's been played "been played by over 13 million gamers on Xbox Live since its launch in November 2007." So, you mean to tell us that CoD4 took that honor without even including the PlayStation Network community? Dayum! Pic of that certificate after the break. Congrats, IW!