intsant replay

The debate use of instant replay in baseball is in full swing right now. The replay system instituted by the MLB in 2008 allows any person on the opposing team of a player who hits a borderline home run or a coach or player of a player who hits a home run but the umpires get the call wrong can ask the umpires to go under the booth to review any home run call. The 3 things an umpire would be looking for would be for a fair/foul home run or if there was any fan interference or the last reason would be to if the ball even left the park. The first time a call was challenged was in early September of 2008 A-Rod hit a drive in Tropicana park toward the left field foul pole that was ruled a home run by 3rd base ump Bryce DePuy but Tampa Bay coach Joe Maddon and catcher Dioner Navvaro argued it was foul. Charlie Reliford the crew chief that day allowed the review to happen but the call stood as A-Rod got his homer. The first time a call was over turned was also in September of 2008 also in Tropicana field. Carlos Pena hit a drive just over the fence. Originally the umpires ruled that there was fan interference but after several minutes of replay Pena was given the home run. The first time instant replay was used was in the post season game three of the 2008 world series A-rod had hit a drive that had bounced off a camera in right field initially played as a double the umpires reviewed the ball and ruled that if the camera wasn't there it would have left the park easily. And A-Rod was awarded the home run. I think instant replay is good for base ball what do you think?