[Dazarath]

Isn't the free card play related to the idea of taking the initiative? If opponents completely ignore the idea of the last aggressor on the previous streets (ie. people who donk bet hands they like, regardless of the previous action), then the free card play becomes useless. But as it stands, it is a useful play in certain situations, and I believe that this is because when we make this play, we are trying to represent a hand range better than the hands of our opponents. (It's also taking advantage of the fact that just about everyone loves to checkraise.) So yes, you could say that this is taking advantage of our opponent's bad play. But so is all of poker.