One like and you’re already better targeted and persuaded to click an ad (via The Guardian).
I hate techniques to get people to buy more stuff they don’t actually want or need. At university we had a course on marketing techniques, for instance how to research the best route through a supermarket to seduce people to buy more. It was after that course I knew I wasn’t cut out for marketing. Instead, I chose to reflect on the field of communication more through philosophy. I wish more people would do that.