HIV researchers use Grindr to recruit participants

... Grindr to be the most effective, the article said. The project is HVTN 505 at the University of Pennsylvania's HIV/AIDS Prevention Research Division Recruiters for HVTN 505 cherry-picked times with peak traffic and for a total of 22 days since the ...

http://www.washingtonblade.com/2013/08/28/hiv-researchers-use-grindr-to-recruit-participants-gay-health-news/