Every Monday, students should post a new current event article (the url) on their assigned course topic.  The post should be no shorter than 2 paragraphs - 1 a summary of the article and 2 a reaction / opinion about the update.  By Friday, students must read at least 2 other students' blog posts and post a comment to their posts.  The comment should be long enough to prove that you did in fact at least read the post (though not necessarily the article).  It should be at least a couple sentences long.