Search engines work by searching their databases for web pages, images, and other files that match the search terms provided by users. They use complex processes and methodologies to retrieve and rank results. The main search engines are Google, Bing, Yahoo, and Baidu, but there are over 30 search engines total that users can employ, with different search engines sometimes returning varying results.

2.  Basically, a search engine is a software program
that searches for sites based on the words that you
designate as search terms. Search engines look
through their own databases of information in
order to find what it is that you are looking for.

3.  They include incredibly detailed processes and
methodologies, and are updated all the time. This
is a bare bones look at how search engines work to
retrieve your search results. All search engines go
by this basic process when conducting search
processes, but because there are differences in
search engines, there are bound to be different
results depending on which engine you use.

4.  There are more than 30 search engines on the
internet, but the main ones are six.

5.  Theinformation may consist of web
pages, images, information and other types of files.
Some search engines also mine data available in
databases or open directories.

6. Boswell, W. (2011) How Does a Search Engine Work? About.com. Retrieved
of http://websearch.about.com/od/enginesanddirectories/a/searchengine.htm
How Many Search Engines Are There? (2011) Retrieved of
http://howmanyarethere.net/how-many-search-engines-are-there/
Web search engine. (2011) Wikipedia the Free Encyclopedia. Retrieved of
http://en.wikipedia.org/wiki/Web_search_engine