The Ottawa Public Library's web site is getting to be really good.
For example, you can now browse the "new arrivals" and "on order" science fiction books. [You can also browse the non-science fiction books but why would you want to?] [Oh, right, maybe you want to read Napoleonic-Era Naval Adventures. It is unfortunate that they don't have that as a browse option, but I'm sure it is on their list of features to be implemented.]
Some of the catalogue listings have links to a review of the book.
When there is no link to reviews, I've found Summize to almost always have a wide enough spectrum of opinions to let me judge whether a book is worth reserving.
Getting nack to the Library's site, the browse feature is nice, but the real power is in the Digital Media and Web Tools.