Wonder if there would be any use in creating COA's stating that an autographed item is bad. Not for everything, but perhaps things that have COA's from a major TPA that are expensive. An 'undetermined number' of 'undetermined individuals' on this forum would have to be in agreement as to the item's fakeness.
We could have anti-COA images on a searchable site somewhere so that forum members could check on high-$ items they are thinking about purchasing or bidding on.
I guess the down-side to such a venture would be lawsuits and being banned from various auction houses