tarheel91 on 27 April 2008
A straw man argument is an informal fallacy based on misrepresentation of an opponent's position.[1] To "set up a straw man" or "set up a straw man argument" is to describe a position that superficially resembles an opponent's actual view but is easier to refute, then attribute that position to the opponent (for example, deliberately overstating the opponent's position).[1] A straw man argument can be a successful rhetorical technique (that is, it may succeed in persuading people) but it carries little or no real evidential weight, because the opponent's actual argument has not been refuted.[2]
Wikipedia beat you to it...
http://en.wikipedia.org/wiki/Scarecrow_argument
