ectotherm writes "According to Professor Peter Kelly, a director of Public Health in Great Britain: 'There has been a four-fold increase in the number of syphilis cases detected, with more young women being affected.' Why the increase? People meeting up for casual sex through Facebook. According to the article, 'Social networking sites are making it easier for people to meet up for casual sex. There is a rise in syphilis because people are having more sexual partners than 20 years ago and often do not use condoms.'"