Vanilla is a product of Lussumo:
Documentation and Support.
Most trolls of the type discussed in this article (the old Bantown clique + hangers on) are mentally unstable drug users with a history of destructive interpersonal relationships who grew up in abusive homes. We act in antisocial ways because we hold the media image of the psychopath as the ideal person; caring about other people has caused us emotional pain & we wish that we didn't have to care.