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CloseReview for 100 Search Engines for Firefox by Rafael
Rated 5 out of 5 stars
Some other search engines you might add http://www.altavista.com/ http://www.lycos.com/ http://www.yebol.com/ http://www.vadlo.com/ http://duckduckgo.com/ (brazilian ones) http://www.mercadolivre.com.br/ http://www.achei.com.br/
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