Blurring Boundaries

The Fluxus events were predominantly aimed at advocating "anti-art".  Duchamp illustrated that everyday objects such as tools (his readymade with the snowshovel) and appliances such as a urinal can be transformed into art.  While these items are not necessarily thought of as having artistic appeal, Duchamp exemplified that they could be.  So then, what exactly is anti-art?

Does increased exposure to artworks increase or take away from the artistic appeal?  Is this a reason why art continually transforms, redefining and recreating its boundaries in order to prevent intellectual stagnation?