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"AdSenseAdvisor notified publishers via a  WebmasterWorld thread that the competitive ad filter now supports up to 500 possible filters.  I believe this limit is up from 200 filtered URLs from 2006.  Some publishers were able to block more than 200.  In fact, I was able to block up to 500 since February 2009.  However, now all publishers should be able to block up to 500.AdSenseAdvisor said:Check your account. We have more than doubled your number of filters (to 500).Please don't go crazy with this. The reason we're not announcing it on the blog is that we don't want to overload our system with everyone filling their filters to capacity at once.Huge thanks go to the awesome engineering team that implemented this for us (I'm an AdSense publisher, too, after all).Please feel free to leave love letters to our engineers below.Most publishers are really happy about this increase.Forum discussion at WebmasterWorld."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/019798.html>