Search engines are large collections (searchable databases) of links to resources on the Internet. Enter keywords and the search engine will return a list of Web pages it has indexed from the Internet that contain those terms.

There are many search engines available on the Web. Search Engine Watch maintains a comprehensive list of Web search engines and their features http://searchenginewatch.com/

• The number of sources it searches, and

• The type of resources it searches

Often, this information is provided on the search engine's home page. Here are examples of 2 popular search engines.

	Google's index to Web resources is comprised of more than 1 billion Web pages.
	The Web database contains over 54 million Web pages. The Usenet database contains an archive of more than 4 million recent Usenet articles.