The bizarre thing about this entire collection of works (some of which are truly awful) is that for many of them, there's almost no difference in quality or style from much of the work I've seen promoted by major art organizations and galleries showcasing both "up and coming" artists and some established figures. I've even noted a certain trend towards increasing promotion of a specifically kitschy style of art by certain galleries, which closely resembles some of the stuff on this site.
So how do we really define bad art if the stuff called bad by one group is nearly identical to the stuff promoted by "high culture" galleries and organizations as being the latest in faashionably interesting art?