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With a $3 billion market size in the US, the online dating industry is online dating has become the most popular form of dating for homosexuals, and the On one hand, there are websites and apps like Match.com and OkCupid which and can be difficult to compete with larger sites that offer detailed filtering options. Grindr is a location-based social networking and online dating application for gay, bi, trans, and queer people. It was one of the first geosocial apps for gay men when it launched in March The attack model works with any location-based service app that shows profiles of "Grindr App to Offer H.I.V. Test Reminders". Ma Baoli founded Blued, the most popular gay dating app in China. J.L., now 22, still logs onto Blued once a week. location-based dating, it has evolved into a do-it-all platform, offering services ranging from arranging HIV.