[MRBAA]

With the possible exception of heads up against an opponent you particularly want to mess with, all "plays" should be made with the goal of having positive value when you make them. So no image plays for me. But here's a simple example: raising to come in with a hand like (3-9)K suited, with your suit live when you are first or second to act. You don't really want to play your flush draw heads up, but the extra $3 to complete versus limp is well worthwhile both because your hand can improve, you may get many callers anyway and it disguises future hands when you do have a big pair at a small cost. On the other hand, when there's one limper and I'm closing the action, I would probably just limp it in, since the limper won't fold, I don't mind if the bring in plays (in fact, I'd like him to most times so I ahve someone else to pay me off if I make my hand), and it can look like I'm limping a big pair anyway to avoid losing my one opponent.