Is it a dangerous line to walk? For who? FB are involved in unethical practices that whilst not illegal at present are much more consequential than your exampl

Is it a dangerous line to walk? For who? FB are involved in unethical practices that whilst not illegal at present are much more consequential than your example. There are obvious questions here to ask that may lead to new laws being made and perhaps even retrospectively enforced. Social engineering for profit is a little more serious than who ate the cookies surely?