“The new digital technology eliminates the need for printing plates, which are so costly to create that many copies of a book need to be produced to justify the expense. Now publishers can go more directly from a computer file to the printed page — a technological process not so different from using a high-quality copy machine. The data can also be stored digitally indefinitely, allowing for quick reprints down the road. The same systems, however, allow anyone to publish, using so-called vanity presses that have sprung up to print books with little or no editorial review, a trend that worries some academic publishers.”