It follows you, it traps you and in this specific case (like so many others) it can ruin your life. There is no trash bin on social media. Yet it seems to happen time and time again. And the offenders are shocked all the same when they become the victims of their own ignorance. Here is a short primer on how to avoid a bout of public shaming. It's certainly not the authoritative volume on how to avoid and rectify situations like this, but let's use this as a friendly reminder of how to stay out of trouble.