Okay, I just found out that books.google.com is out there in beta form. I may be behind the times. I had heard that they were in the process of scanning all books into this database; however, I had no idea that the were already putting them online.
I just did a search for "Actionscript" because Flash programming is my latest fling. It returned 567 books in multiple languages. The second on the list, "Actionscript Cookbook" retails for $50. All pages of the book except 870-873 are included in the free preview of the book.
There is something to be said for having a book that you can hold in your hand; however, for reference things like above, this is great. There's almost no point in joining O'Reilly's Safari if these books are available through google. And, unlike a book, you can actually search this!