I ran across an interesting site containing an algorithm that predicts your sex based on browser history. This algorithm uses demographics from popular sites, determines which popular sites you have visited by digging through your browser history, and then predicts what gender you are based on your browsing habits. 

This algorithm sounds a lot like an adaptation of the Turing Test. But instead of predicting which of two participants in the test is human, this one predicts what gender they are. The Turing Test has long been the standard for judging the intelligence of a computer system, even though it is flawed in many ways.