Publishing houses initially viewed Google’s Book Search, as the project is called, as a serious threat to their economic well-being. Many publishers, it should be said, stick by that assessment. But others have come to appreciate Google’s method for dealing with books under copyright: The search engine typically displays small sections of those books alongside links to sites where the complete texts can be purchased.

This has been so effective, says a representative of Oxford University Press, that “321,000 times in the last two years, people have clicked on an Oxford book saying ‘I want to buy this.’ We spent nothing to do that. That’s why we’re a big fan of this program.”