Monday, July 20, 2009

Exercise 23.4: Searching mechanisms

Question 4.
What is a meta-search engine? Provide some examples.

Meta-search engines work by transmitting your search keywords simultaneously to several individual search engines and their databases of web pages. Meta-search engines do not own a database of Web pages, they send your search terms to the databases maintained by search engine companies. For example Dogpile at http://www.dogpile.com searches Google, Yahoo, Live Search & Ask. Clusty at http://www.clusty.com on the other hand searches free search engines and directories but not Google or Yahoo.

According to the list on wikipedia the following is a list of meta-search engines:
  • Brainboost, ChunkIt!, Clusty, DeeperWeb, Dogpile, Excite, Harvester42, HotBot, Info.com, Ixquick, Kayak, LeapFish, Mamma, Metacrawler, MetaLib, Mobissimo, Myriad Search, SideStep, Turbo10, WebCrawler.

References
Metasearch Engines (n.d.). Retrieved July 20, 2009 from http://en.wikipedia.org/wiki/List_of_search_engines#Metasearch_engines
Meta-Search Engines (n.d.). Retrieved July 20, 2009 from http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/MetaSearch.html

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