Why Metadata Matters for the Future of E-Books | Wired.com: "Publishing metadata ... — things like ISBNs, trim size, etc. — has traditionally been one of the dullest aspects of the business, useful for selling to retailers and libraries but not much else. Now, however, publishers are expanding their definition and uses of metadata, in order to make their titles easier to find in text searches. Readers don’t care about metadata — until they can or can’t find the book they’re looking for."