You are absolutely right, an analysis of all data that are being collected by giant networks like facebook or google and others, In business, they can utilize the likes and dislikes of people and be able to sell the right product and be able to come up with an advertising plan. Elaborating further they can actually use this analysis to able to predict the behavior of a particular age group, an entire society, and even the entire humanity. I am sure there are pros and cons for this type of issue. But I think whether we like it or not that's the point we are heading, at least at the moment.