Ann Arbor District Library
Located in Ann Arbor, MI.
Online catalog is a customized Drupal front end with an Innovative Interfaces catalog. The catalog has integrated book reviews and blogs, including a blog by director Josie Parker. The blogs get comments, sometimes 50+ patron comments on particularly interesting items.
A search plugin for Firefox by Matt Hampel allows direct keyword searches of the catalog from your browser.
More info on AADL blogs.
The AXIS AADL Blog has news of gaming tournaments for kids, teens and adults. The blog that goes with it announcing events will often have 100+ comments.