Facebook's experimenting with a new way to play videos uploaded to its News Feed, but not everyone will get to take part -- not yet, anyway. This new Vine-like feature, which will begin rolling out to a limited group of US-based mobile users, allows for videos viewed on mobile to play silently as a user browses the News Feed. Audio will only play when a user elects to click on the video, at which point it will expand for the duration of the clip. So far, Facebook is limiting these auto-play videos to those that come from accounts with verified pages (read: celebrities) and individual users, not marketers. So you don't have to worry about your News Feed getting spammed for now, although the company is evaluating whether or not to let the big bad wolves of the ad world join in. For a preview of what this new video tweak will look like, head on past the break.