This morning Facebook announced its new video calling feature, powered by Skype. We've been getting a bunch of reader questions asking just how the heck they enable it, so we figured we'd give you a quick how to. It's simple, but for some reason Facebook hasn't made it super clear. All you need to do is go to the Facebook Video Calling page and hit the green button to turn it on. You can then initiate a video chat session with any of your available friends. If they haven't already enabled the feature themselves, they'll get a prompt to install a plug-in, and you'll be chatting in no time.