The investigators will conduct a series of experiments that will result in improved knowledge of how to conduct internet-based HIV prevention research with MSM in ways that improve the protection of human subjects and decrease biases in data collections. The design will consist of preparatory online qualitative research with up to 100 MSM, followed by two cross-sectional randomized controlled trials of MSM recruited online; a total of 2440 MSM will be enrolled in the two randomized quantitative studies (1,440 in Study 1 to determine optimal methods to provide informed consent, online, and 1000 in Study 2 to determine how to best improve retention in online surveys). About 2440 men will be enrolled in the study in total. This summary describes Study 1; a separate submission will be completed for Study 2.