A recent Sledgehammer blog update discusses a few aspects of Call of Duty: Advanced Warfare, one of them being how matchmaking works in the military shooter sequel, and another being "reverse boosting" where players repeatedly commit suicide. Here's word on matchmaking: "The system we have today is, to all intents and purposes, identical to what Activision has always had in place, with the same matchmaking parameters, as previous Call of Duty titles. We continue to monitor and optimize our systems, but the speed of connection is and always will be our first priority." And here's a bit on banning reverse boosters:

On a separate topic, we’ve also heard questions about our banning policy, particularly as we've seen players using “reverse boosting” with excessive suicides in online matches driving a lot of frustration within the community. Playing at home, I’ve been randomly matched with players doing this and it’s incredibly frustrating to lose based largely on my team being down a contributing teammate. We’ve also had a lot of players bring up their same concern about playing in matches with these players. No one wants to lose an objective based match by effectively being outnumbered while their teammate shoots grenades into their own forehead 100 times in the corner. It’s not right, and it hurts you and your team’s online experience. Call of Duty is both social and competitive, and we respect and honor that. Part of the competition that is core to our values is that players do not adversely degrade their team's ability to compete fairly. It's not dissimilar from the bans that cheaters and boosters receive, and we have increased our focus on reverse boost banning to combat the growing issue. No one is trying to restrict the fun factor of playing Advanced Warfare with this policy, nor are we actively banning against particular styles of play, like trick shots. However, we have a low tolerance approach to people who ruin the experience for others through cheating, boosting, reverse boosting or being caught with toxic emblems in game. We don’t like seeing any of these happen, and we're pushing to eliminate these behaviors from the game.