Meta social network

I'm forced to recognize that despite making fun of the social networking hype, I do use a number of web things which feed other things and involve people I know. So, jokes aside, here's an attempt at making sense of the feed topology, my personal feedological graphic if you will:

This is also my first attempt at a blog post from a mobile photo... I took the above a few days ago and synced it to picasa over the air. But you can't rotate!