When Google released Chrome 66 just over two weeks ago, it received lots of attention and praise for introducing the ability to mute autoplaying videos with sound until you press play. Today, Chrome product manager John Pallett revealed that "the new policy blocks about half of unwanted autoplays." VentureBeat reports: Pallett also shared that "a significant number" of autoplays are paused, muted, or have their tab closed within six seconds by Chrome users. He didn't say how many exactly, as the number varies significantly from site to site. But that shouldn't surprise anyone, given how much work Google put into this latest feature. Chrome decides which autoplaying content to stop in its tracks by learning your preferences and ranking each website according to your past behavior. If you don't have browsing history with a site, Chrome allows autoplay for over 1,000 sites where Google says the highest percentage of visitors play media with sound (sites where media is the main point of visiting the site). As you browse the web, Chrome updates that list by enabling autoplay on sites where you play media with sound during most of your visits, and disables it on sites where you don't.