Filip Sernhede February 28, 2019 Foursquare, the magic behind the curtain. Filip Sernhede February 28, 2019 Four - what you say? You mean that old social media platform? Well, yes and no. Not all, but many of you might have heard of Foursquare and our guess is that you dont know its huge potential it's actually have if you know how to use it.