Spanish 8 Posted March 6, 2014 An estimated 31,282 Portland men -- 3.7 percent of the adult male population -- solicit prostitutes from online sex advertisements, according to a novel study of 15 U.S. cities by Arizona State University. The Rose City fell in the middle of the pack in per capita solicitations, lagging far behind Houston (21.4 percent), Kansas City(14.5 percent) and Las Vegas (13.5 percent), according to the study. Share this post Link to post Share on other sites