Comment 1 for bug 520413

There has been at least 2 separate incidents relating to spammers in the last few days. Speaking as someone who is in the process of trying to clean up the mess that has been made, I believe that having an option such as this would be extremely useful. As Ubuntu becomes more popular as time goes by I believe that we may unfortunately see more of this type of abuse.

See this link for the list of changes made by the other recent user that was causing problems:
http://search.gmane.org/?query=&author=Rhett+Trappman&group=gmane.linux.ubuntu.bugs.general&sort=date&DEFAULTOP=and