User blog comment:Joe Copp/Why do YOU play MW2?/@comment-1790643-20100529203601

They're so unable to do it, that when they see someone who has, they accuse them of rank hacking. It's been out for 6 months, and if you're not totally braindead you should be able to figure out that challenges + certain game modes (snd, demolition) + not sucking = lots of XP.