Search Your Library Using Amazon
This is one of the coolest little hacks I've seen in a long time. When you're search for books in Amazon, you can click on a bookmarklet (basically a little button) in your browser to have it search your local library's system for that book. It works wonderfully!
If you're looking for a bookmark for the Deschutes County Library, just drag the following link to your toolbar/bookmarks, and when you see a book on Amazon you like, click on it and watch it work:
Deschutes County Library
Amazon's much faster for me than the county's site, so this work's great.