Yahoo!

Yahoo! was the apparent leader of the search business when Google began in 1998, yet within a few years Google had become the default search engine for regular Internet users. The contrast frames the book’s account of how Google used the web’s link structure to aggregate judgments from across millions of pages and deliver relevant results quickly.

Early dominance and competition

At Google’s launch, Yahoo! seemed to have a stranglehold on search. If it faltered, AltaVista or Lycos appeared likely to become the leading alternative. The competitive landscape changed within a couple of years: Google became the default search engine for people who regularly used the Internet because it did a better job of finding the right page quickly.

PageRank and the web’s links

The book connects that advantage to PageRank, the algorithm defined by Google founders Sergey Brin and Lawrence Page in their 1998 paper, “The Anatomy of a Large-Scale Hypertextual Web Search Engine.” The system treats a link from one page to another as a vote for the page it points to. It does not simply count votes: links from pages judged important carry greater weight, helping determine which pages matter most for a search.

A distributed source of judgment

The example presents Google’s ranking as an aggregation of judgments distributed across the web rather than a decision made by a small group of search experts. Web pages contribute through their links, and the algorithm combines those contributions into rankings. The book emphasizes the scale of the task: Google could survey three billion web pages while producing the quick, useful results users had come to expect. Yahoo!’s early advantage and Google’s subsequent rise thus introduce a broader argument about how a crowd’s dispersed information can be made collectively useful through an organizing mechanism.