Here's how I treat the thumbs up/down buttons: If you played fair and you didn't abandon your teammates, I'll probably upvote you. If you played and one of your teammates abandons the match, I'll probably upvote you. If you spend the entire match gold farming or using the communication buttons in an annoying way (i.e., I watched a guy spam another player with dozens of question marks every time he died), I'll definitely downvote you. If you abandon or seem to go dormant for a long period...