text: "There's a lot of ignorance online."
  
  Another topic altogether--although a very valid one.  Sometimes to two appear together--in addition to revealing his/her specific trait (narcissism, for example), the troll sometimes also reveals a stunning ignorance about the topic and issues being addressed.  I do NOT give most of these people credit for being clever enough to deliberately make ignorant comments to inflame the victim.  I just don't think most of them are THAT clever.