The "Insider Fraud" ping list.
For a particular type of troll who resurrects old threads claiming relationship with the people in the news story...and spins a tale of pathos, takes other posters to task for posts they made months and even years in the past, insists that they not judge any behavior, refuses to use capital letters or punctuation, spells abominably, and uses lots and lots of feigned outrage and exclamation points.
We had so many about a year ago, all haunting tragedy or child abuse threads, that we decided to make a ping list just for them.