Southeast Michigan accounts for over 70 % of all HIV/STI cases in the state, with young men who have sex with men (YMSM) between the ages of 13 and 24 encumbering the largest burden in HIV/STI incidence. Using community-based participatory research principles, we developed and pilot tested a web-based, randomized control trial seeking to promote HIV/STI testing ("Get Connected!") among YMSM (N = 130; ages 15-24). Randomized participants completed a baseline assessment and shown a test-locator condition (control) or a tailored, personalized site (treatment). At 30-day follow-up, we found high acceptability among YMSM in both conditions, yet higher credibility of intervention content among YMSM in the treatment group (d = .55). Furthermore, 30 participants reported testing by following, with the majority of these participants (73.3 %; n = 22) completing the treatment condition, a clinically meaningful effect (d = .34) suggesting preliminary efficacy for the intervention. These results demonstrate the potential of the intervention, and suggest that a larger efficacy trial may be warranted.