A fun thing my brother and I talked about during Combat! blog’s long rest was that Facebook use is declining among teenagers. For whatever reason—we posited that it was because Facebook is all pictures of babies now when it used to be cool bands and people you hooked up with, although that may just be our user experience—kids prefer Snapchat or Vine or Twist or Goob. Which is interesting, because Facebook sold itself as a service. It arguably just pulled off a multibillion-dollar IPO as a service. Facebook is the premiere social network, as we all know from that movie Citizen Kane. But maybe it is the perennial social network of a certain group of people. Facebook isn’t a service; it’s a cadre.