I occasionally like to share some of the productivity hacks I use. This is one of them.
If you're a book lover, it's likely that you have overflowing shelves of books at home (yes, Tom...this means you! ;-). I decided a few years ago to pare down on my actual book buying and try to utilize the local library more often. Even so, I find myself on Amazon quite a bit (either via a blog link, a suggestion from a friend or just to see what's new). If I find something of interest but I'm not sure I want to purchase it, I'll check if it's available in the library catalog. Being a tech and productivity geek, I don't want to waste time having to lookup these books again. Fortunately, I don't have to. I've got The LibraryLookup Project bookmarklets for the two library systems in my area readily handy in my toolbar. When I find a book I like on Amazon, I simply select the bookmarklet and another window opens, displaying the book in the library catalog (if they have it).
If you're interested in the technical aspect of the bookmarklet, it uses regular expressions to retrieve the ISBN from the Amazon page and opens a new browser window to your library's online catalog system, passing the ISBN to the lookup form via the URL. The LibraryLookup Bookmark Generator allows you to set the base URL for your library system and determines how to construct the URL based on the software vendor that the library uses (hint: you can usually find this by going to the library online catalog...it's generally listed on the page somewhere).
Invoking the bookmarklet is a simple process and allows me to do my library browsing from the comfort of home, all while utilizing the Amazon UI, which is really much nicer than the library's own software.
It's a great tool...you should check it out.