My dad has been saying for years, even before the internet took off, never write anything you don’t want the whole world to see. When the internet came along he reiterated the same message saying don’t write anything online you don’t want your friends, your boss, the police, a judge or anyone else to see. Anyone who goes online with the belief that they are anonymous and writes things that can seriously hurt their career or something that might put them in jail is foolish.
Indeed. Don't say, read, write, watch or do anything you wouldn't want your friends, boss, police, or judge to know... and now you are no longer your own person but rather an inoffensive amalgam of the beliefs of others.