Here are two neat features that have been added to Google Book Search in the past few months:
Public domain titles can now be downloaded, saved, and printed in full. To find public domain titles you can download in PDF format, select the “Full view” radio button on Google Book Search, and click the new “Download” button on the right side of the title’s record page.
“Find this book in a library” links have also been added to many more titles. Also on the right side of the title’s record page, this link leads you to OCLC’s Open WorldCat. Once in the title’s Open WorldCat record, you can find this book in a library near you by entering your postal code, province, or country in the “Enter Location Information” field.