Book burro and your library
If you’ve ever searched for a book on amazon or some such site, but hesitated with your purchase because you wondered if you might just borrow the book from the library, then book burro is the tool for you. From the site:
Book Burro is a Web 2.0 extension for Firefox and Flock. When it senses you are looking at a page that contains a book, it will overlay a small panel which when opened lists prices at online bookstores such as Amazon, Buy, Half (and many more) and whether the book is available at your library.
So rather than cut-and-paste the title from amazon to socrates, book burro links to WorldCat and lets you see if we (or another local library) have the volume. Once you install the plug-in, update your zip code so book burro knows where you are.