I'm interested in what off-the-shelf Content Management Systems libraries are actively using for their websites and/or intranets, e.g. WordPress, Expression Engine. This is essentially a poll, and I might ask further questions after we gather some data.
I'm NOT interested in talking about custom solutions, or using client software like Dreamweaver or (shudder) FrontPage which generate static web pages, except insofar as they might work together with a CMS.
Please answer in the form "Mallville Public Library uses WordPress for its public website www.mallville.org" and I'll aggregate the answers in a wiki below for convenience. Or, if you have enough reputation, go ahead and edit it yourself.