There is a tendency to use CPU power as a benchmark for technological progress. (“In 1960, a computer had X amount of cycles per second. In 2008, computers have Y amount. Wowee!”) As a blunt tool, this seems effective…but it seems to me that you can really measure progress in technology as an inverse function of the relative complexity of using any given device as a proxy for obtaining pornography.
Amusing proposition, but isn’t that at least partly culturally determined? I mean, the same PC user in Dubai is going to face more technological complexity in accomplishing this task than in the Netherlands.
And of course, cultures aren’t static in time, and neither is the definition of porn.