They'd realize it on this site really fast. As soon as they stopped getting Likes and responses they'd know something was wrong.
My friend is positively vicious about how he handles abusers of Internet on his own web site. He tells you before you even talk on it that if you do it the administrator will contact your IP carrier. I've never heard anyone else be that upset about it, so distressed that he makes it a legal consequence AND tells you about it before you've ever done a thing, which I have a minor problem with but what the hell.
They went on and on and on about invading people's privacy when Edward Snowden released all that information, then when someone with lots of money and isn't associated with the government tracks you online they don't even care at all. Or so it seems.