> A "like button" based search is going to eat their lunch Only until the content farms build bots capable of liking each other. It's an eternal arms race.

> A "like button" based search is going to eat their lunch Only until the content farms build bots capable of liking each other. It's an eternal arms race. Google figures out a property that quality content has (links from other sites, URL matching keywords, "like button" clicks), and it's useful for a while until the content farms figure it out and morph their content to match those rules.