Structured Blogging
The PubSub people have launched Structured Blogging, which advocates "making a movie review look different from a calendar entry. On the surface, it’s as simple as that - formatting blog entries around their content."
I find the advocacy site a bit vague. The underlying message is one of the driving forces for Tinderbox blogs. In Tinderbox, it's easy to create a BookReview post, which is distinct from a LoveStory post, a Diary, a TravelNote, or whatever you write about. You just say, "this is a a prototypical TravelNote", and then whenever you add a post you can select "TravelNote" from a popup menu to make a new post "just like that one".