As both a way to listen to complaints about glitches during multiplayer games in past games and as a way to boost up the multiplayer to compete better against Battlefield 3, Infinity Ward hired a group of known glitchers to help smooth out any glitches and bugs for Modern Warfare 3's multiplayer modes.
Normally the Q&A department spends a couple of days searching for glitches but according to one person in the group, IW wants the group to work on the game for over a week.
The same group had been brought in twice before in the past for World at War and Modern Warfare 2 but this time Inifnity Ward is putting more priority on finding and fixing any possible glitches found before the game goes on sale later this year. They also want to make sure that the group isn't hiding any glitches due to the past times glitches were found too early after a game's release.
http://kotaku.com/5819770/glitchers-...-3-multiplayer