Hi, I am an iPhone developer and I am planning to launch a contest for the best player of one of mine iPhone games. My intention is to create a Facebook event in order to let more people know about this opportunity and at the end of each month I want to award the player with the best Game Center score with some PayPal credit, or something similar to this. However, I am not sure about the legal issues involved and whether I need to pay taxes etc. Any help or guidance will be greatly appreciated. Thanks!