I use facebook and I use there advertising tools. Most people have no clue how far it goes in term of no privacy at all. Facebook goes to far in collecting data. I think any service that is free goes to far in collecting data. The problem that right know has to end is a matter of choices you have with your personal data. If you go on a website that has a facebook like button, Facebook rigister your browser habit even if you do not have an account. That is one of many breaches of privacy. One somebody finds out and shout: You can not do that! Facebook do a mea culpa and continou with the things you do not know. And it is not only facebook. It is all companys that are trying to sell trough personal brand offers. What is the real problem? Let's say you are allergic or you are a target because you have mony or power somehow. Any one with a litlle background in datamining, is your potential enemy. A lack of privacy costs lives. That is way the people must have a clear and total control what is shared.