is porn a 13 billion dollar market? XBIZ needs your input here.

• January 12, 2010

I was reading today’s Los Angeles Times article on the struggles of the porn biz, and came across the 13 billion dollar figure which apparently has been based on an educated guess all along.
Is it even possible to make an educated guess on the size of the global porn market?If you did manage to somehow obtain revenue information from key companies around the world, would the numbers be reliable/verifiable enough to support an educated guess?
I ask because XBIZ is interested in getting to the bottom of this fascinating topic.
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