Garth Brooks joined Twitter, Facebook and Instagram last week, embracing the very social media he razzes in his new single "Man Against the Machine." The country superstar posted his first video to Facebook wearing a baseball hat with a Garth Brooks logo. He launched his Twitter account (@garthbrooks) by posting a selfie and sending this sweet tweet to his wife, Trisha Yearwood: "hey gorgeous!! Miss you this morning. Get back to me :)"