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Choose from more than 100 million new & used books, used textbooks, and rare, out-of-print books from over 8,000 independent book stores around the world.

AbeBooks is your source for Used, New, Rare and Out of print books. Find classic collectibles, rare signed editions, used textbooks, and inexpensive bestsellers from independent booksellers worldwide.

Biblio brings together thousands of independent booksellers worldwide to offer you over 50 million used, rare, out-of-print, signed and first edition books and textbooks. Searching is done by author, title, keyword, or isbn number. Search Biblio for ...

LibraryThing catalogs your books online, easily, quickly and for free.

GetTextbooks.com compares new & used textbook prices from hundreds of online bookstores to find the cheapest textbook prices every time.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

Alexa provides information about websites including Top Sites, Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information and Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-on that shows d...

Twitter is without a doubt the best way to share and discover what is happening right now.

PagesInventory.com is a free service that provides information about webhosting and domain names, reverse IP (+Ipv6) search and some other services.

Huge database of affiliate IDs and products associated with websites.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.