David, over at Science and Sensibility, has used the blog family tree that The Commissar to form the basis for a phylogenetic tree. Phylogenies are tree-like diagrams of evolutionary relationships. They are a very common tool in science, and David does a really fantastic job at explaining them. It's definitely worth a look.
Hat Tip: Pharyngula
(Postscript:) In the unlikely event that anyone is interested in knowing, I group with the Pharyngulids.