Gay dating apps Scruff, Hornet, and Grindr are displayed for a photograph on an Apple Inc. iPhone in Tiskilwa, Illinois, U.S., on Tuesday, Jan. 20, 2015. For gay men flocking to smartphone dating applications, making a connection increasingly comes with messages about HIV status, testing and drug regimens. Some apps let users declare their status, remind them to get tested and give locations of the closest clinics. Photographer: Daniel Acker/Bloomberg via Getty Images