> They sponsor firefox and safari, so have exclusive rights on the default settings though.
"They pay to be the default so no one else can" is kind of a silly argument. If Yahoo had paid more and/or hadn't had terrible results, it probably still would be the default.
And they have the money to pay for placement because they make more money from search because everyone uses Google already... hmm.
If everyone likes Google best, why do they bother paying anything for the default settings? Or are they simply protecting their dominant position by using their dominant position?