Dude, Saturday night was the sweatiest I've ever seen. I chalked it up to the world cup thing going on but no Xbox kids as cannon fodder makes a lot of sense.
A good way to see if someone is on K+M is how they loot. With a mouse you can look straight from piece of loot to piece of loot, but with an analog stick I find more often we will use left stick a lot to investigate a pile of loot.