I just came across a blog, run by Adam Isacson at the Center for International Policy, called Plan Colombia and Beyond. Although he seems to stray less "beyond" his subject matter than does the one you're reading, it's a great resource for understanding U.S. policy toward Colombia. The posts are often quite long and thorough, and Isacson is very good about responding to reader's queries.
He also coordinates CIP's demilitarization program, which, among other things, has published the very useful Just the Facts 2001-2002: A Quick Tour of U.S. Defense and Security Relations With Latin America and the Caribbean.
At Adam's personal website, he also has about twenty music reviews -- but there's obviously a generation (or geographic) gap here, because I've never heard of a single one of them.