DOTA is a way to scold other people without having your identity found out unless some people are exceptionally sharp and remember you even after the game has ended. It can be frustrating whether you're winning or losing depending on the attitude of the player. The most important thing to remember in DOTA is that it's a team game, no solo high and mighty players, no players who gets pissed off if they're killing spree is stolen by a teammate, etc etc. It's a game for goodness sake.