The Google Books settlement with U.S. writers and publishers, now scheduled for release Nov. 13, is the result of a four-year tussle over the question of whether the company has the right to digitize millions of books, both those in print and those out of print.

Google began its digitizing project in 2005, going to several major university libraries and digitizing every book it found there. The company said its aim is to increase the amount of knowledge available online. But the Authors Guild of America accused the company of "massive copyright infringement" and began a class-action lawsuit against it. Publishers later joined in. That class action has resulted in Google displaying only snippets of books not yet in the public domain.

A $125-million US settlement was announced in 2008 but was dragged back to court in June of this year amid accusations that it was unfair, following an antitrust investigation by the U.S. Department of Justice. Although the deal is being worked out in a U.S. court, it will apply to everyone connected to the publishing business around the world.

Under the terms of the settlement, Google will have the right to digitize any book published up to Jan. 5, 2009, and available for sale in the U.S. This includes almost all Canadian books in print, as virtually all books published in Canada are available in the U.S.

For readers, it could mean access to millions of books, including some long out of print, on the internet. The most likely subscribers to the Google service would be public, school or university libraries. Individual readers would also have the option to buy books — at prices ranging from $1.99 to $29.99 US.

The intention is to have a searchable database with millions of titles. Consumers will be able to download and print books in a PDF format. They will also be able to read them online or on devices such as iPhones and digital readers. Google Editions, an online service that will let readers buy electronic versions of books, was launched this October.

The main issue for readers is privacy. Because you are searching and reading on a public network, there is little assurance that your browsing and reading habits are private. Here are some of the questions raised by groups such as the Electronic Frontier Foundation:

The service presents enormous opportunities, by putting a diverse array of books into the hands of a huge volume of readers. Some authors are welcoming the prospect that people around the world will have access to their work. But both writers and publishers have concerns about compensation and how their works might be used.

Google has agreed to pay $60 US per title for in-print books it has already digitized. There is potential for additional compensation from books sold through the online service and ads posted alongside any Google book. The company has pledged a total pot of $45 million, but authors have to apply to get their money. If they ignore the issue, or are unaware of the Google Books settlement, they get nothing.

The sheer size and scope of the Google deal is a concern for many players, from authors and publishers to governments and potential competitors. Google's deal states that the company has a right to digitize any book, unless it is explicitly withheld. So any author who does not want his or her book included in the deal had to opt out by May of this year.

Similarly, authors and publishers who want to be compensated for the digitizing of their book have to register with the Book Rights Registry, a U.S.-based not-for-profit organization created expressly for the purpose of administering copyright fees for Google Books. If authors don't register, no one will be making efforts to track them down.

For "orphan" works — those for which the copyright holder is unknown or cannot be found — Google stands to claim all the proceeds of offering them to the public. It has an effective legal monopoly on these works, which is of concern to the company's potential competitors.

In the U.S., books become public domain 70 years after the death of the author. But international rules for when works come into public domain vary by country, with different regimes for Britain, Australia, the European Union and Canada, whose copyright act is currently under review.

The U.S. Copyright Office, the European Union, Germany, France, five U.S. attorneys general, Microsoft, Yahoo and Amazon are among those who have opposed the deal. Google agreed to appoint EU members to its Book Rights Registry, which would usurp the role played by national copyright organizations. Even Chinese writers groups have come forward to object.

Many of the international aspects of the deal are still to be worked out. Google has said it plans to use geo-blocking technology to prevent access to books in other countries until agreements are reached there.