Meta crawlers are not independent search engines, the keywords, entered by users, and are sent to several other search engines. The best known Meta crawler search engine is: www.metacrawler.com. The search is simplified for the user, as he doesn't have to enter the keywords in several search engines. The user enters his keywords into a Meta crawler search engine and receives load of information on only one page. Mete crawlers get data from between three and some hundred search engines. The search results of a Meta crawler have a high quality, because of the diversity and the complexity.