It uses information sources such as AltaVista, Excite, Yahoo, HotBot, Infoseek, Lycos, Magellan, Open Text, WebCrawler, and DejaNews.
CNN: Downloads to improve your Web experience
2.
Google holds an archive of 800 million postings to Internet newsgroups, from alt.sex.bondage to alt.humanities.classics, most of which it bought on the cheap just before Dejanews.com went out of business in 2000.