That's another flaw with performance-based rewards: They are easy for one of your competitors to top.
Joel SpolskyA user interface is well-designed when the program behaves exactly how the user thought it would.
Joel SpolskyBeware of Methodologies. They are a great way to bring everyone up to a dismal, but passable, level of performance, but at the same time, they are aggravating to more talented people who chafe at the restrictions that are placed on them.
Joel Spolsky