Do you shop online? Follow the news on your iPad? Use Google to search for information? Of course you do. And you may well have noticed that these activities are becoming increasingly personalised experiences: ‘you recently bought X, you might also like Y.’ Your data is big business and there are algorithms out there mining the tell-tale silvery data trail that, snail-like, you leave behind you wherever you go.
http://www.bst.ac.jp/principalsblog/disrupting-everything-big-data-and-the-age-of-the-algorithm/