So the Google Adsense competitive ad filter is terrible. The Adsense competitive ad filter is honestly a piece of crap product that Google should be ashamed of. It works like this: when adsense shows ads which are either competitive or irrelevant to your site (which happens all the time) you can put them into the Adsense competitive ad filter so Google will stop displaying them. Sounds good in principle, but in practice it is terrible. You have to cut and paste those ads into the Competitive Ad Filter, and have to wait at least a couple hours to see if it works.
The Google adsense competitive ad filter it only works about 75% of the time! And now I have so many blocked competitors, I never know whether I’m adding a site that has already be blocked or not and I have to go back and delete the duplicates. Basically, Google either doesn’t want you to use the Competitive Ad Filter or did a terrible job of designing it. I have tried to block sites that I don’t want being shown, honestly because they are adult subject matter and I run a blog that I want to be family oriented. For awhile I had a Christian website that ran nothing but psychic and atheist religious ads. I had to watch my ads and copy and paste every single one I wanted blocked into my competitive ad filter, one by one! Can we get something a tad more efficient please Google adsense?
