The site exclusion tool just got bigger and better...

In the spring, we launched the Site Exclusion tool to give you more control to determine where your ads will show on the content network. This tool allows you to prevent your ads from showing on specific sites in the content network in the same way that you can add negative keywords to stop your ads from showing for specific keyword searches.

Recently, we increased the number of sites that you can exclude using this tool to 500. This gives you the ability to further tailor your AdWords account to the needs of your business. Remember, excluding a site in the content network will prevent you from showing on all of the pages that fall under that site's domain. We suggest that you review these sites carefully before you decide to exclude them. After all, the content network allows you to reach a targeted audience across a broad range of sites, and we wouldn't want you to miss any customers!

Posted by Sarah, Inside AdWords crew