In 2011, advertisers submitted billions of ads to Google,
and of those, Google disabled more than 130 million ads. And their systems
continue to improve—in fact, in 2011 they reduced the percentage of bad ads by
more than 50% compared with 2010. That means that their methods are working. Google
is also catching the vast majority of these scam ads before they ever appear on
Google or on any of their partner networks.
For example, in 2011, Google shut down approximately 150,000
accounts for attempting to advertise counterfeit goods, and more than 95% of
these accounts were discovered through Google’s own detection efforts and risk
models.
Here’s David Baker, Engineering Director, who can explain
more about how Google detect and remove scam ads:
In 2012, Google continued to make progress towards this
goal: They introduced new tools for stopping bad ads, provided greater
transparency around the ads review process, and explained how advertisers can
connect with them if they ever mistakenly disapprove good ads.
Below is a more complete look at Google’s efforts to combat
bad ads in 2012.
