“…Several studies published in recent years have focused on the use of GSN apps among MSM with a particular focus on motivations for GSN app use (Grosskopf, LaVasseur, & Glaser, 2014; Van De Wiele & Tong, 2014), sexual risk behaviors (Beymer et al, 2014, Rice et al, 2012; Lehmiller & Ioerger, 2014; Winetrobe, Rice, Bauermeister, Petering, & Holloway, 2014), HIV testing (Rendina, Jimenez, Grov, Ventuneac, & Parsons, 2014), and the acceptability of varied HIV prevention strategies among users (Burrell et al, 2012; Holloway et al, 2014; Landovitz et al, 2013). While none of these studies have focused explicitly on substance use, several have reported substance use prevalence among users.…”