Can we call it The Swamp?
How about The Unforgiven? suits them well 
The threads might help to take the load off admins/moderators because often these questions can be answered by regular users e.g. by showing plagiarism examples.
and sometimes these threads revealed other connected users and lead to more bannings so unintentionally they are helping us expose and catch more plagiators
Also I'm seriously doubting the sincerity of some of those appeals that seem more and more like fishing expeditions trying to figure out how to improve their copypasta skills.
I got the same feeling too... they looked like a trial and error method, looking for loophole or weakness