I've never been to a con but if I'm not working by next July I plan on heading to San Diego and hitting the portfolio reviews.
Aside from the reviews I've seen plenty of artists in the alley from studios I'd kill to work for. As I know there are regulars here who had booths this year I thought I'd ask what your feelings are about being aproached by wannabes. Do you mind sharing perspective or looking through portfolios? Do you give the better advice to those who buy something?