Interesting to Me: Parts 2 and 3 of "The Secret History of Social Networking"

I'm an old man, so going out on the town on a Saturday night is no longer an option for me. Because of this, I listen to a lot of radio programs via the internet. Here are the last two parts of "The Secret History of Social Networking" for your enjoyment:

Part 2

http://www.bbc.co.uk/programmes/b00y2f2s

The growth of Facebook

Part 3

http://www.bbc.co.uk/programmes/b00y5jgf

The future of social networking

Part 1 (If you missed it.)
http://www.bbc.co.uk/programmes/b00xw14v