1. When a stream of notifications says someone's going deep into your old lists and liking them, and it's like a friendly spider is crawling around in your brain
    New people: everyone loves it when you do this. Like away!
  2. When you wake up hungover and remember that you did a LOT of drunken list commenting the night before
  3. When you haven't listed in 3 weeks and fear that, as with eggs in ovaries, you were born with a finite number of lists inside you
  4. When an incredibly niche lists fits into your weird niche just so
  5. When you invent an original list concept but do a search right before you publish, and someone else has already listed it, better
  6. When you meet people in real life that you know from List App and they glow