Have you checked in somewhere today? I'm guessing you haven't. Five years ago, my Twitter feed was rife with people unlocking this badge and becoming Mayor of that coffee shop. Today, nothing. And so it wasn't surprising to read VentureBeat's coverage of Foursquare's "controversial" relaunch - which, VB tells us, is "not looking good." Even more important than the decline of the check-in, though, is the fundamental question: Who cares? Aside from the founders. And the investors. And the staff. And the families of those three groups.