Leaverbuster will get you if you just stand in base without moving. In fact, it warns you after a certain amount of time. As far as honoring the other teams players that AFK, that is one of the worst things you could do. Yes, it's free LP, but you're just encouraging the behavior of that person to continue to do that to the next team or the one after that. You are making yourself part of the problem.
As for you Danolanater AW, your leaverbuster penalty was well deserved. Even if one or several of your teammates AFK it does not excuse you to do so. In fact, I would go as far to say that AFKing is the cowards way out. I've won 4v5's and even 3v5's. It's difficult but not impossible especially that early in your game.