I've gotten pretty angry at LoL lately. I'm level 20 and keep getting stuck in matches with highly ranked level 30's who queue with low level smurfs to dominate games start to finish. And it isn't just a couple games either, in the last 10 matches 8 have been level 30 greifers. It's really frustrating to stand no chance because the runes and mastery give these people such a large advantage. I can't even usually overcome it with skill =(