There’s a great project underway south of the border called the Association Community Blogs and Podcasts Wiki:

The goal of this project is to create a master list of associations that are using blogging, podcasting or other social media tools in their work… PLEASE NOTE: These are social media applications sponsored by associations, rather than blogs, podcasts and so forth about associations.

The list includes anything and everything from our own AIMS Canada to the Mississippi Hospital Association and is a great resource for any similar organization looking to research best practices.