I think Corey spoke up because he IS so well liked by the average fan. If Hall, Fielder, Weeks, Gagne, Turnbow, etc. come out and say "I don't like it when fans boo us" (or in Fielder's case he just wished they wouldn't do it as often), then those booing fans become even more intense because those guys are doing poorly. Maybe they think if a guy like Hart or Braun or Hardy sticks up for their fellow teammates, the fans won't be so quick to jump on them. I, for one, never really understood booing at a baseball game because things go wrong a lot more than they go right. A guy can only get a hit 3 times out of 10 and be considered a very good hitter -- those 7 failures provide a lot of opportunities for fans to boo. I think it's one thing to voice displeasure with an error in the field, it's another to completely rail on a guy every time he isn't perfect.