And (why) I didn’t publish it. It all started with the question — how do meaningless, basic, and some — just plain stupid apps become viral on App Store/Google Play? At least one of these downloads is yours — Crack your screen (10,000,000+), Windows XP error (1,000,000+), Yo (1,000,000+), Paper Racing (5,000,000+), right? Is there a…