In 2015, around the time MetaMed ran out of money, Andrew Rettek raised $2,280 on GoFundMe to hire his wife to write a report on STI transmission risks. https://www.gofundme.com/f/n5kt74 Safer sex is important but its very like our friends to go "thousands of professionals around the world have devoted their lives to this topic, but I bet I can do better in a week with scihub and the power of fanfic." Some of our friends totally took that report and tried to play the odds rather than stick to strict rules.
Edit / the report is here https://srconstantin.github.io/2015/04/30/std-statistics.html