I have only two people on there,
One is an ex-guildmate who ignored me first for unknown reasons, my guess is that I once said something about furries and they took it as a personal insult. Either way, it turned awkward so I had to ensure I'd never see their furry a** again. gaia_kittenstar
The other is some psychopathic b***h who let loose on a post of mine here in an endless tirade of ad hominems and cussing, said they'd report me etc. Mods had to intervene. lol
Not much on the internet gets to me tbh, so I have no 'criteria', I just ignore for my own convenience.