1. What is a search engine?:
   • it's software, that crawls over the web like a human by mouse clicking

   • collecting/gathering all found data/web-pages into a database

   • offering a web-interface to that database

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2. What is a META search engine?:
   • it's software, thats takes a user query to the search engines

   • collecting, reviewing and ranking their answers

   • and give them back in condensed form to the user