http://www.bookwire.com
2. BookSpot
http://www.bookspot.com
3. BookBrowser
http://www.bookbrowser.com
4. Booktalk
http://www.booktalk.com
5. BookZone
http://www.bookzone.com
6. Library of Congress
http://www.loc.gov
7. BiblioBytes
http://www.bb.com
8. BookBrowse
http://www.bookbrowse.com
9. Bookreporter
http://www.bookreporter.com
10. n.b
http://www.nybooks.com