Meta-search engines

When you search something on a meta-search engine, it transmits the research all at once to several different search engines and their databases of web pages. Of all the search engines quiered, that is where the results from your research come from. Meta-search engines do not own a database of web pages, therefore they send what you are researching to the databases maintained by search engine companies. Meta-search engines such as cluster, dogpile, and so forth are different from Google, Yahoo, and other search engines because search engines just search for documents with the key words from what you typed in to search and returns a list of documents with those key words found in them. Google and Yahoo search only the index that has been created by someone. They do not actually search the entire web. Which is why you can get dead links when using what was found by Google and Yahoo.