It's a great idea, and I hope that it succeeds, but it's disappointing now. Many libraries that ought to be listed are not. Moreover, the "Add a library" feature that one would use to add missing libraries does not work (and I am using an up-to-date Firefox); attempts to use it return a server error.

It's been very useful. It has my library system in it's setup and I live in a small Canadian province. I've ordered many books from my library rather than buying them right off. Real money saver.

Excellent add-on. Author is very quick to respond, and added my local library within hours of making a request. Seems like a really nice dude. :)

Cheers for making this!

Works like a charm!