I'm only about 17 months late to this one. Blodagriddims is a collective podcast/blog series that started on July 3, 2006. The concept reminds me of Act-I-Vate, but without the centralized site. Each podcast has a different theme as well as an accompanying blog post that goes in-depth about the genre/song selections. One of the posts on weareie.com was over 2,500 words.