[Discover] HowStuffWorks - Learn how Everything Works! http://www.howstuffworks.com/ (reference howto science information)
 [Discover] Cartoons, Cartoon Information, The First Toon Encyclopedia - Don Markstein's Toonopedia http://www.toonopedia.com/ (comics animation cartoons encyclopedia)
 [Discover] Encyclopedia of Life http://www.eol.org/index (encyclopedia wiki search life)
 [Discover] Wikipedia EN http://www.wikipedia.org/ (wikipedia encyclopedia wiki dictionary)
 [Discover] LoveToKnow 1911 http://www.1911encyclopedia.org/Main_Page (encyclopedia reference research library)
 [Discover] Bartleby.com: Great Books Online -- Encyclopedia, Dictionary, Thesaurus and hundreds more http://www.bartleby.com/ (literature books reference encyclopedia)
 [Discover] Deletionpedia http://deletionpedia.dbatley.com/w/index.php?title=Main_Page (wikipedia encyclopedia reference archive)
 [Discover] The Rock Hard Times http://www.trht.net/ (music wiki encyclopedia reference)
 [Discover] WikiAudio http://wikiaudio.com/ (wiki music audio sound)
 [Discover] The WWW Virtual Library http://vlib.org/ (resources research books history)
 [Discover] knowledge repository - trivia galore http://ididnotknowthatyesterday.blogspot.com/ (fun blog lifehack funny)
 [Discover] Main Page - Conservapedia http://www.conservapedia.com/Main_Page (encyclopedia politics reference conservative)
 [Discover] Main Page - Citizendium http://en.citizendium.org/wiki/Main_Page (encyclopedia collaboration reference wiki)
 [Discover] Scholarpedia http://scholarpedia.org/article/Main_Page (wiki wikipedia academic encyclopedia)
 [Discover] Practically Edible http://www.practicallyedible.com/ (cooking culinary encyclopedia reference)
 [Discover] Educypedia, The educational encyclopedia is the most complete Encyclopedia in the world with ... http://www.educypedia.be/ (engineering education encyclopedia science)
 [Discover] Encyclopedia of Mental Disorders http://www.minddisorders.com/ (psychology medicine psychiatry health)
 [Discover] M/Cyclopedia of New Media http://www.wiki.media-culture.org.au/index.php/Main_Page (encyclopedia www)
 [Discover] Encyclopedia of Trotskyism On-Line http://www.marxists.org/history/etol/ (politics history education encyclopedia)
 [Discover] Enciclopedia Libre Universal en Español. Artículo de la Enciclopedia. http://enciclopedia.us.es/index.php/Enciclopedia_Libre_Universal_en_Espa%C3%B1ol (encyclopedia research reference)
 [Discover] ILMES http://www.lrz-muenchen.de/~wlm/ein_voll.htm (sociology soziologie encyclopedia german)
 [Discover] Filme Von A-Z http://www.filmevona-z.de/ (deutsch movies cinema database)
 [Discover] CIA - The World Factbook https://www.cia.gov/cia/publications/factbook/ (encyclopedia factbook statistics world)
 [Discover] Nihilism [Internet Encyclopedia of Philosophy] http://www.iep.utm.edu/n/nihilism.htm (encyclopedia philosophy nihilism)
 [Discover] Antique Spectacles & Other Vision Aids http://www.antiquespectacles.com/ (history spectacles accessories technology)