are handy tools that help you find what you're looking for on the Web.
engine uses special software (called spiders or robots) to compile a database
of pages found on the Web. When you submit a
search, the search engine scans its own database to match your terms
against terms in the pages of its database.
So, each search
engine searches the part of the Web it has collected--not the whole
Web--and each search engine has a somewhat different database of
of popular search engines are