Other than the death threats, most of them that I've read have been hilarious.
> now adds cryptic rants centered around the number 7 to pages related to the Bible and ancient Egypt.
> Usually editing anonymously from IPs around London, the editor will regularly remove the phrase "best known for" or other superlatives
> Vandalism on articles related to the television show Friends. Persistently introduces factual errors regarding the relationship statuses of the characters.
> In addition, the user changes date formats without a valid reason.
> will begin to insert fake contents en masse on Singaporean television drama pages [...] although it is normally restricted to reverting the page back to its vandalized version
> On 30 June 2015, this person began using IP addresses in Greece. A discussion was raised at ANI. They returned to the UK after two weeks.
> The hoax is that a person named Geraldine Edwards was the last girlfriend of singer Robert Palmer, despite the fact that all the newspapers reported Palmer's last girlfriend to be Mary Ambrose, a living person. Part of the hoax is to insult or diminish Ambrose as much as possible.
> a vandal who uses IPs that geolocate to Indiana to persistently disrupt articles related to the Muppets
When "Best Known For" gets reverted they start vicious edit wars and harass other editors. That's the abusive behavior. Wiki editors are quite tolerant of different viewpoints on editing as long as those views get arbitrated correctly when editors differ. Edit wars and harassment aren't the golden path.
> now adds cryptic rants centered around the number 7 to pages related to the Bible and ancient Egypt.
> Usually editing anonymously from IPs around London, the editor will regularly remove the phrase "best known for" or other superlatives
> Vandalism on articles related to the television show Friends. Persistently introduces factual errors regarding the relationship statuses of the characters.
> In addition, the user changes date formats without a valid reason.
> will begin to insert fake contents en masse on Singaporean television drama pages [...] although it is normally restricted to reverting the page back to its vandalized version
> On 30 June 2015, this person began using IP addresses in Greece. A discussion was raised at ANI. They returned to the UK after two weeks.
> The hoax is that a person named Geraldine Edwards was the last girlfriend of singer Robert Palmer, despite the fact that all the newspapers reported Palmer's last girlfriend to be Mary Ambrose, a living person. Part of the hoax is to insult or diminish Ambrose as much as possible.
> a vandal who uses IPs that geolocate to Indiana to persistently disrupt articles related to the Muppets