How much did it cost YouTube to stream Gangnam Style?

Somehow, the most interesting thing to me upon clicking this link aren't the answers but the relationships and demographics of responders and voters on Quora.

At a glance, looking at the top voted answer here. The upvoters are 13% are followers of the responder, 6% have surnames which are common in the USA, 15% have surnames common in India...

I'm sure the folks at Quora are drawing all kinds of interesting trends out of all those relationships.