I do not follow anyone on Twitter that I do not find value in the connection. If a coach is following, he sees value of some sort. If you haven't had "the talk" and I'm talking about social media responsibility with your son, I advise you do so. What some kids find acceptable on social media might not be received well by a coach. I assumed since my kid was a good student and stayed off the radar that he had some common sense. I was wrong, he is just another teenage boy and Twitter allowed him to prove that to the public. Fortunately, nothing that stuck with him but he was lucky.