Tony Hirst suggested that we try something like this experient for the fall edition of the Connectivism course. There is definitely some merit to the suggestion, and especially in the idea of comparing OPML lists before and after the course, to observe progress, and also to look at other networks, such as Twitter or Facebook connections. Of course, we may need to draft someone like Tony to implement this. Heh. Mat Morrison has offered to share the (Perl) code he used to produce diagrams like this one of congress twitterers and of other Twitter social network analysis.