S4M’s served impressions, clicks, CTR, landing pages, installs and opens on mobile browsers and applications are now MRC accredited June 7, 2016 -- S4M (Success for Mobile), a fast-growing mobile ad tech company, has been granted Media Rating Council (MRC) accreditation for mobile ad metrics, including served display and rich media ad impressions, clicks, and CTR for both mobile browsers and apps. Significantly, S4M is now the only service currently accredited by MRC for certain important mobile post-click metrics, including landings for browsers, and installs and opens for apps.