Today I found news about a new Google project - Google Book Search. This service, available at http://books.google.com/, allows users to search for books and browse some of them online. In most cases, only parts of books are available and the whole material is copyrighted. Google Book Search also offers long description of every book, links to online stores where the book is available, possibility to search words in a single books and more features.
Currently I have not seen any books from Wikibooks there. I find this project as a real chance for Wikibooks to promote itself and its content; we should add our PDF versions there if it is possible. Google says it does not take any money for adding new books to its search engine, but I am not sure if they require ISBN number for each book.
What is your opinion on this project?