I find it annoying when someone in your team who is not jus a noob but play on to screw the entire game by feeding the opponents and serve no useful purpose to the team mates as i came across 1 sohai bane who likes to sleep their own teammate in the midst of battle.... and the best is that he can sleep you when you went from north to south to save him and he bloody sleep you so that opponents now switch attention on you instead.