As I have said few days ago in a post about a thread by our beloved Sharifa, "there is no privacity in internet --or at internet" (I´m not sure what is more correct in english).
Right. Every thing you do in a web, blog, twitter, facebook, yahoo or google group or whatever will be, could be known by everybody around the world. It can pass --and it will pass-- person to person. Your profile, your posts, yours tastes, your ideas, your opinions, your quarrels with this and that one....