There was a documentary on TV the other night called "Virtual Perfection" that I found interresting and relevant to this course. It is about how these virtual worlds like Second Life, World of Warcraft, Linage etc. work.
Some of the topics are how people not connected to the company owning the software can earn money on it, how events in these worlds affect us and how these societies resemble real life in alot of aspects. I will stop my description there and let you make your own picture of it. :)
The documentary was made for an English TV channel so it should be no problem for anyone watching it (the first minute of the stream is in Swedish with a guy presenting the movie, don't be intimidated by it). The only thing that might be a bit frustrating is that there are a few interviews with Chinese and Korean people that are only translated to Swedish.
The stream can be found here: http://svtplay.se/v/1748403/k_special/virtuell_perfektion and the video will be availible on that site untill November 29th.
I hope you enjoy it!