What Facebook and Google collect about you far exceeds a simple "advertising profile" of your likes. They know more about your online behaviour than you do. I've said this before, but Google omits basic facts in their privacy policy about the data they collect about you. Things like: how long they keep your data, whether the data is anonymised, whether your searches or activity are disassociated from your identity, and who sees your data inside the company. These are not minor or unreasonable questions to ask - they are exactly what you'd expect to find in a privacy policy (especially from a company that arguably tracks users more than anyone else online). Yet, Google does not answer any of these questions. Why do they get a free pass?