This divide-and-conquer approach even informed the basic algorithms running Google search. Rather than basing search results solely on a single source—the content of individual web pages—Google looked at links created by millions of people to determine a site's importance. Sergey called it "the democracy of the web," because each link was a vote cast in favor of a site's credibility. That approach made Google scale better than the competition, because the more the web expanded, the more links Google harvested for its ranking algorithm.