If you’re already a member of Foursquare, you know damn well it’s Foursquare Day, and have probably already been ‘playing’ for a couple hours. Good luck, and godspeed. For the rest of you, let me tell you all about the most bizarre alternate reality game you’ve never played, and why it’s important. I’m a pretty cheap guy, and as such do not yet own a smartphone. My phone is an LG 8100, if you must know: takes MiniSD for memory (MicroSD’s completely useless and defunct cousin), looks like it was designed by Rubbermaid, and has suffered a veritable gauntlet of alternative applications: hammer, doorstop,…