Google now ‘no longer a limit to the number of categories you can filter from your sites. You can now filter as many of the 11 available categories as you’d like,” says Google. Category filtering feature allows you to prevent ads that fall into specific categories like ‘religion’ and ‘dating’ from appearing on your pages. You can filter categories by visiting your Ad Review Center, located under the AdSense Setup tab. Click the ‘change’ link to view available categories to filter. Your selections will be applied to ads in English, French, German, and Spanish, no matter how they’ve been targeted to your site. Also recommend taking a look at the columns showing how much of your recent revenue and ad impressions are generated by each of the categories. This’ll give you an idea how applying these filters may affect your account.