Tru dat.  A johnny come lately seeks parity with a legendary genius. Hoe does he go about achieving that? He seeks some personal weakness of the target, forcing a response. Viola, in the public's eye you're already associated with him now. Eminem and MGK are now on the same boat as far as the people are concerned.  Mission accomplished!

Eminem should've best ignored him, rather than ban him and thus make him famous.  OTOH, salute to MGK's marketing team. Crafty, devilish, but very, very clever.