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For all that as me use firefox , there are a list of extensions that will do the navigation nice and entertainment, only remember does not exaggerate in the amount because our Firefox still consumes a lot of memory
http://www.econsultant.com/i-want-firefox-extension/
http://lifedev.net/2008/02/25-firefox-extensions-to-make-you-more-productive/
http://www.pthree.org/the-ultimate-firefox-extension-list-for-junkies/
http://best-firefox-extensions.blogspot.com/
http://en.wikipedia.org/wiki/List_of_Firefox_extensions#Browser_features
why we must read ebooks, here a list of 30 reasons, some more interesting than others:
http://epublishersweekly.blogspot.com/2008/02/30-benefits-of-ebooks.html