CS Professor Jon Kleinberg's work on hubs and authorities, as well as the search engine Teoma's follow-on implementation are discussed in a recent article in SIAM News, November 2004 article on the history of web search, "The Ongoing Search for Efficient Web Search Algorithms". Sample quote from Jon: Google's "plain face hides a monster of ever increasing complexity".
http://www.siam.org/siamnews/11-04/websearch.pdf