Both sites do the same thing to determine the winner. You type in two keyword phrases, the one that returns the most results is the winner. So when you peg Google against Yahoo, Yahoo wins. Its simple, but it seems as if people are really sticking to the GoogleBattle.com version over the GoogleWar.com version. Why? Better user interface. The GoogleBattle.com discussion is taking place at this thread and the GoogleWar.com topic is being discussed at this thread at Cre8asite forums.