SECTION 3: USING SEARCH ENGINES EFFECTIVELY
META SEARCH ENGINES
A META SEARCH ENGINE, such as MetaCrawler® (http://www.metacrawler.com) or AskJeeves® (http://www.askjeeves.com), is like a middle-man or middle agent between you and the search engines. Because retrieval results vary from engine to engine, people often search several engines for one topic. This is time-consuming, plus you'll find lots of duplication.
So, using a META SEARCH ENGINE saves time by searching several engines at once and by eliminating duplication.