Sex is the Question was an online cross-sectional survey that consisted of three consecutive years of data collection. The project aimed to collect data from over 10,000 men who have sex with men (MSM) across the United States in each of the data collection cycles. The purpose of Sex Is The Question was to be able to monitor trends in HIV risk behaviors among MSM and provide supplemental national HIV behavioral data in addition to what is collected for the existing National HIV Behavioral Surveillance System that collects data on MSM every three years.