That puzzles me as well. If these event coordinators are really working hard to run a good con i think they should try to verify that someone is who they say they are, whether it's an artist, publisher or vendor, at least to some extent. I'm not talking DNA samples and dental records but if someone is an authorized dealer they should be able to produce some kind of credentials. Otherwise i think it cheapens the whole experience and will eventually give comic cons a bad reputation for both the vendor and consumer alike. What artist will want to waste his time at a con if 2 booths down on either side of his table is some jerk selling cheap prints of his work?After reading the article I wonder though how someone can sell stuff at a Art Expo without any ID in the first place