"But if their search was perfect, there would be no more need for advertising." A percentage of their revenue is from adverts generated from searches, but a to

"But if their search was perfect, there would be no more need for advertising." A percentage of their revenue is from adverts generated from searches, but a ton is generated from adsense on peoples websites, in gmail, etc etc I really don't put much hope on other payment schemes taking off. Advertising is a pretty good proven model, with premium options for the smaller set of users willing to pay.