Common Craft is a production company. To quote their website "Our product is explanation." Explanations are what they do and they do it well (with great diagrams and simple common words). I really enjoy their videos - clear, concise, and to the point. The little paper animations are lots of fun too.
What I learned from this particular video describes exactly how and why WebBlogs (Blogs) have been an important innovation. Yes they are an easy way for somebody to post up their daily thoughts and ramblings, but they are much, much more. Blogs take the media out of the hands of the giants and gives it to us little guys (and no not all of us are Davids). Anybody with access to a computer can easily become a publisher.