http://apple20.blogs.fortune.cnn.com...-1000-hits-66/
Not that stats can be trusted but this seemed a bit surprising if it is indeed true.
I suppose though, as far as porn goes, Mac is a lot more popular than the stats of PC sales. A huge percentage of computers are bought for businesses and they are almost all PC. Very little porn traffic comes from work computers. It would be interesting to know the % of computers between home/personal and work.