Google on Thursday announced a new feature that will let users mute so-called "reminder ads" in third-party apps and websites that are powered by its ad engine. It plans to expand this feature to its own services, including Gmail, YouTube and Google Search, in the coming months. The new tool is the latest addition to Google's dashboard for ad controls, first launched as Ads Preferences Manager back in 2009. The addition of Ad Settings and Mute This Ad will allow users essentially to block certain ads on Google, on websites and in apps.