Overly strict deals, and deals that turn out not to be good as expected. I went to a great local gastropub for dinner because they run a deal of having $3 Philly pints. So I figured they meant $3 on beers from the Philly region. Nope, they meant on breweries in Philly proper. The only I can think of is Yards, which makes very good beer. However the only Yards on tap was Brawler, an English Dark Ale style beer. I always find those to be a bit mild for my tastes.