Facebook and other websites "following" me?

[Kehon H]

unfortunately this is not illegal and they do it thru the use of cookies so every time you goto a website it adds a cookie and then when you go back to facebook or myspace they check to see what cookies are there and advertise accordingly. They get paid each time you click on a link so it's better for them if they put stuff on their sites that you might want to click and see.