You’ve all seen them and used them. That awesome little mortgage / insurance / car payment / whatever online calculator. They come in handy at just the right moment. You visit some site, probably one that is only loosely related to the calculator, you use it, and then you blitz off on your merry way to web world.
Little did you know that that innocent little sheep is really a wolf – a sophisticated growth hack designed to grow someone’s business – and it isn’t who you think it is.