Your data, Your decision   Red Onions  Image: Red Onions CC-BY-
ND 2.0 Flickr: Clay Irving   Social media sites use web and
mobile based technology to create interactive dialog among
organizations, communities, and individuals. As a member of a
social media website, you are encouraged to share more about
yourself; what you do, what your likes and dislikes are, what
you bought online. You are encouraged to take more photographs,
connect with more people, organize more events, and so on. You
may think that you are in full control of what, and how much,
you share on these sites. The reality is that you are only in
control of a fraction of the information these sites collect
about you.  The majority of the sites you visit use cookies to
distinguish your user from all the others users. This small
piece of data can also be used to determine any relationship
between sequential page visits you make, and visits you make to
other websites. Cookies alone do not identify people by name,
but they are defined themselves by