Getting embarassing ads on Android? This setting tells advertisers to stop tracking (or to start from scratch)

While ads everywhere on your phone can feel annoying, they may start to feel embarrassing as well at a certain point. To implement advertising-related tracking at the OS level and serve targeted ads, every Android phone with Google Play Services carries a Google Advertising ID (GAID). It acts somewhat like a cookie by providing an identifier that can be used to serve targeted and personalized ads.