Danny Sullivan has been covering search engines since late 1995, when he undertook a study of how they indexed web pages. The results were published online as "A Webmaster's Guide To Search Engines," a pioneering effort to answer the many questions site designers and Internet publicists had about search engines.

Continuing interest in search engines caused Sullivan to expand the guide into SearchEngineWatch.com, to serve both web marketers and those who wish to search better. The site is now widely recognized as an authoritative place to find the straight scoop on dealing with search engines.

Sullivan continues to maintain SearchEngineWatch.com for internet.com, which acquired the site in 1997. He also speaks and consults on issues involving search engines.

Previously, Sullivan oversaw a web site design firm in Southern California. In his pre-web life, he was a newspaper reporter, having worked for the Orange County Register and the Los Angeles Times.