Like a tired marriage, the relationship between libraries and publishers has long been dull. E-books, however, are causing heartache. Libraries know they need digital wares, but many publishers are too cautious about piracy (盗版）and lost sales to co-operate. Among the big six, only Random House and Harper Collins license e-books with most libraries.
Publishers are wise to be nervous. Owners of e-readers (电子阅读器）are exactly the customers they need: book-lovers with money. If these people switch to borrowing e-books instead of buying them, what then? Electronic borrowing is awfully convenient. Unlike printed books, which must be checked out and returned to a physical library miles from where you live, book files can be downloaded at home. The files disappear from the device when they are due.
E-lending is not simple, however. There are lots of different and often incompatible (不兼容的)e-book formats, devices and licenses. Most libraries use a company called OverDrive，which secures rights from publishers and provides e-books and audio files in every format. Yet publishers and libraries are worried by OverDrive's global market dominance, as the company can control fees and conditions. Publishers were annoyed when OverDrive cooperated with Amazon, the world's biggest online bookseller，last year. Owners of Amazon's Kindle e-reader who want to borrow e-books from libraries are now redirected to Amazon's website, where they must use their Amazon account to secure a loan.
According to Pew, an opinion researcher, library users are a perfect for market for Amazon. Late last year Amazon introduced its Kindle Owners' Lending Library, which lets its best customers borrow free one of thousands of popular books each month.
Library supporters argue that book borrowers arc also book buyers and that libraries are vital spaces for readers to discover new work. Many were cheered by a recent Pew survey, which found that more than half of Americans with library cards say they prefer to buy their e-books.
So publishers keep adjusting their lending arrangements in search of the right balance.
Random House raised its licensing prices earlier this year, and Harper Collins limits libraries to lending its titles 26 times.
