I've noticed looking through Google Books that you can add books to your own personal library. I've found some real gems on my own, I was wondering if anyone had found a site that lists user's library's on various topics, as google refers to here:
http://books.google.com/support/bin/...n&answer=75375
Google Books of course has a great treasure trove of public domain works, but the subject categorization is incomplete, and there were many books on GB that I never would have found if I hadn't looked in the bibliography of other similar books.