Do people realise how ignorant they sound when they cry about privacy. For example wanting Vac when they do the same thing and also looks at your DNS cache entries. You also use websites that log your ip address, which can be use to find your location and your identity (Yes you can). Also things like facebook messages, skype and other chat program give out your ip to the people that you talk to and with some simple tweaks they can have your IP. Now most sites that you join have a TOS that says by agreeing you are ok with them logging your info. Now lets go get more basic your browser also logs what you do and in some cases send that information to the company that made the browser.
Also don’t forget that most sites also have a statement that you agree to in the TOS that states that they can add things and update the TOS at anytime and it’s your job to read it when it happens. Sometime they give you a notification that says a small change was made, but it could be a change you don’t like.
Also most of your information is easy to find online and that’s how a lot of fraud/stolen identity happen now.