Google has uncovered a bit on how they manage ad safety with a new blog post yesterday afternoon.

Google announced they have shut down about 800,000 advertisers and blocked over 130 million ads from showing up on their network. They have come a long way in this regard and it is a constant battle between Google and rogue advertisers.

Google has documented some of the general steps they take to detect bad ads and advertisers.

(1) They monitor ad and landing page content to detect scams, malware and such.

(2) Manual reviews of ads after being flagged by an algorithm

(3) User generated spam reports

Here is the full video:

For those who can’t watch it, here is the transcript:

Forum discussion on Google+.