By Elisabeth Forsythe - Head of Media and Public Relations, [Forgotten Books] International Standard Book Numbers, or ISBNs, are an important part of book publishing. They help with book discovery, and are used with each edition of a book. Elisabeth Forsythe explains why Forgotten Books, the world's largest online library, recently purchased 500,000 ISBNs, and what that means … [Read more...] about Guest Post: Why Forgotten Books purchased 500,000 ISBNs