I came back to my account after it was grinding/pvp av mixed mode all day, Ive been running it like that for 9-12 hours for the alst 2 days. And i had a 72 hour ban, I appealed it with a very convincing and good letter, And 1 hour later they said i got compromised they locked my account and then i just had to reset my password and i was fine. Leads me to believe that grinding is being picked up by blizz in some way, since ive been readidng alot of ppl getting 72 hour suspensions from grinding then appealed instantly especially since our accounts were not even hacked in the slightest bit lol. Meh thought i might just share my little story with you guys