Internet users are doing far fewer searches for sex and pornography and more for e-commerce and business than they were seven years ago, University of Pittsburgh and Penn State researchers say. “20% of all searching was sex-related back in 1997, now it’s about 5%,” said Amanda Spink, the University of Pittsburgh professor. It’s a little bit more in Europe, 8-10%, but in comparison to everything else, it’s a very small percentage.