I went looking for a library blog in Australia - that was my first criteria. So I was very happy to find one in somewhat familiar territory that is actually a really good site. Below is the library home page - the reason I provide the url for the home page is because there are multiple blogs across the top of this page! It's really great.
http://www.yprl.vic.gov.au/
What I really liked was each blog has a different theme and provides links as well as commentary. So even though the Book Blog wasn't that current, the links were really good. I had seen or read about Library Thing and Fiction Connection and forgotten about them.
I thought the library web page was laid out well and I like the blogs across the top. Very visible and accessible. And they use Blogger - I recognized the templates!