Certus Finance to Discuss Billing, Russian Market at XBIZ Miami This Week May 24, 2021 Updater Adult News Porn Porn Free Porn News XBiz News Certus Finance Founder and CEO Sergey will lend his expertise to the XBIZ Miami panel “Billing Now: The Outlook for Payment Processing,” sponsored by YourPaysitePartner, Tuesday at 12 noon (PDT).