They have also gamed the system , sometimes illegally , to hit targets that put fat sums in their pockets .
他们同时也在玩弄制度，有时还是非法的，以实现将大量资金收入囊中的目标。
These are based on some of the main approaches used by google to identify useful content though critics say they are open to abuse , and google is in a constant battle to prevent its system being gamed .
Matt cutts , who leads google 's dealings with websites , says giving away too much about its search algorithm would expose the system to being " gamed " but adds : " we try to communicate as much as we can . "
