Google released their bad ad report for 2016, one can read full report on Google official blog . According to report google took down nearly 1.7 billion ads ( double as in 2015) that were violated their advertising policies. Also in 2016, Google detected and disabled a total of 112 million ads for "trick to click," 6X more than in 2015. In a six-month time frame from when Google instituted their payday loan ban, they disabled more than 5 million payday loan ads. Read google advertising policies - https://support.google.com/adwordspolicy/answer/6008942?hl=en#con