How are you defining "abuse"?
For the purposes of this thread, I'm looking for campaigns that have an abundance of one line posters joining it or actively participating in it.
I am also gathering data from campaigns that are already over, preferably ones that may have been seen in the past as campaigns that were abused by one line posters or suspected multiple accounts by one person.
What I define as untrustworthy behavior for suspected groups may vary depending on the remaining evidence I would need to gather for each.