
1. Lists of things. This is because autists have trouble remembering things, so they write them down in public spaces.
(Edited 2 minutes later.)
2. Arm flapping
> Sonic
> Pokemon
> MLP
> Minecraft
> Anime
> Lego after age 18
> Dwarf Fortress
> Platform Masters
> America
> Old perants
> Too much vidya
> Linux(Edited 2 minutes later.)