Online sexual hook-ups present a unique opportunity to explore many factors of decision-making that inform sexual health. A study conducted by Dr. Eric Schrimshaw, at Columbia University’s Mailman School of Public Health and Dr. Martin J. Downing, Jr., of the National Development and Research Institutes, found evidence that men having sex with men use the Internet to find sexual partners who do not identify as gay, either to fulfill a fantasy or because it allows anonymous sexual encounters without discovery. The findings are online in Psychology of Sexual Orientation and Gender Diversity, published by the American Psychological Association.