Ok so there might be a thing or two which might lead you to eventually leave some game, for example a death or leaving ur stove on and forgetting to shut it off, although dota is a life and death situation, leaving a game is wrong, unless you are wanted too. So therefore if you want to leave the game get the permission by your team members, tell them politely of whats going on state your reason clearly, be corteous, divide the gold and items equally, then only after then apologize to your opponent and stating the reason of why you want to quit the game. After everything is cleared up then only you can leave.

That's the reason i quit dota. leavers.

I think its ok to leave...

just be mannered and type "gg" before you leave....

i am noob, i get pawn 0-12 but i nvr leave even my team mate scold me kao kao.

WHY? because u get pawn because u noob than i learn from mistake i done and i play next round better. If u noob just play extra careful.

BTW u don't like ppl spoiling ur game than u don't try and spoil ppl game also.

I hate leaver i nvm u noob but because every 1 is noob when there start to learn Ah Men