Google is working on a built-in ad blocker for its Chrome browser and could release it in a few weeks, reports The Wall Street Journal. While that seems counter-intuitive for a company that makes most of its money through advertising, it’s actually not the worst idea ever. The feature will block certain types of ads that ruin users’ browsing experience, such as pop-ups, auto-playing videos with sound, sticky ads that take up a lot of screen real estate and prestitials that count down before you can get to the content you meant to see.