So an attempt by a local monopoly ISP to monetize its customers' relationships with anyone would be an attempt by the owner of a wedge of earth to force new mountains up, to make certain paths on the meme network intractable.
Speaking of diagrams, you could use publically available resources to build world maps of your friends. An interesting version would be a "friends projection" of the world. That is, draw the most logical (probably real-location-based) friends network you can, then use each node's meatspace location to warp a world map around it; I have several LJ friends in California's Bay Area so it would be bigger in a friends projection map than, say, Greenland, where I have zero friends that I know of. I might build it depending how lucrative the Google ads would be, compared to processing time and bandwidth overage.
I have to finish getting ready for class now.