I find the small business angle pretty interesting. I know a lot of people doing small businesses that use FB for marketing, yet if you were to ask them how FB

I find the small business angle pretty interesting. I know a lot of people doing small businesses that use FB for marketing, yet if you were to ask them how FB works, they wouldn't have a clue. They see the interface, not the implementation. Their interests are aligned in one way, both benefit from being able to find customers. But in another way, there's a principal-agent problem. FB negotiates with the shops for their cut of the pie, with a fair degree of power. They're also one of the few entities large enough to lobby government, which they can do for both or for themselves.