Rushing

Rushing is the process of using a higher level character to "rush" or "turbo" one or more lower level characters through the game. This is a useful tactic in most RPGs since characters earn higher rewards from higher level monsters.

For example, it might take an hour to rush a low level character up to a higher difficulty level, and after an hour of play time there (sharing in the experience of the kills made by other players) the low level character would have advanced to state that would have required a day of play to reach normally.

Rushing is also used as an exploit to obtain quest-related rewards, usually in item form. In Diablo II it was popular to rush low level characters through to get the Hellforge rune drops.

It's not yet known if rushing will be permitted or beneficial in Diablo III.