"He launched LibraryThing.com in August as a way to bring the organizational joys of the librarian to a wider array of book nerds. Ten months later, his concept has blossomed into a vibrant community with 47,670 registered members -- some paying -- and a user-created catalog that includes more than 3.6 million volumes. In theory, that makes LibraryThing the 58th largest library in the U.S."

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