Posting this thread, or trying to get everyone to report them won't do anything.
If SE has evidence that they've been doing something, it only takes 1 GM call/Special Task Force report. They will be banned right then and there. (An exageration, I doubt they'd be banned right then and there, it'll take however long it takes for them to investigate the account(s))
If they have no evidence, having 15-20 people spamming GM calls won't make SE go "Oh, they've got 20 people placing calls, this changes everything! Let's ban them!"
It only takes 1. 1 call to get them banned, anything else after that is just wasting GM/STF's time when they have to go through GM Calls/STF reports of 20 people saying the same thing when they could be investigating the issue.
Not to mention "MPK them at will." will only get you banned as well.