Bad Move Mulligan

I think we should have to face the consequences of our bad moves. Your opponent is probably less likely to make this mistake [ http://www.chess.com/echess/game?id=59314460 ] again after it has inconvinienced him and his rating, than if it didn't. 

It is possible to play drawback games. It's an option where you choose if you want a rated game or not. Also it is possible at settings to set that you will not automatically win on time (doesn't work for tournament or team matches)

http://www.chess.com/forum/view/general/takeback-request-option

If it is a piece move and not a capture you could arrange it between yourselves.

"Heh, that's a blunder",

"So it is, silly me"

" I'll go Rb1 and then we'll both go back to where we were, OK?"

"Sure"

5... Nd6 is a bad blunder. You should play 6. Nc6+ winning his queen.

I think chess.com should have a mulligan program because it would make it more likely for you to make silly dilly moves like this

http://www.chess.com/echess/game?id=59413742

That way your opponents would get two or three big laughs during each game.

It think it should really be meant for PUI.........playing while under the influence.