As a marketer, I love this site. As a human being... totally diferent story.
along with the well-know privacy issues, this site turns to be highly intolerable to things like mothers feeding their children, and much more accesible to hate and discrimination material including photos of dogs being slaughtered for pleasure.
search for Killthosebastards on it.
Serious privacy risk. Your all private life events are under someone else's hand to make use of. They know when,what,where,who,who's who and everything else about you. They use tools and statistical models to predict all about you and your being.
Everything is then sold for money in the form of reports to clients.