This is exactly the reason I gave up on SO. It was so disappointing to see the "frist!" answer get votes, even when it was factually incorrect. By the time it took me to think and write a half decent phrase the original answer had been edited dozens of times. The site was also eager to interrupt me every time to tell me that an existing answer had been edited. They did everything possible to allow the system to be gamed and, well... they succeeded.