Banned 3 days ago.

[Apatheist]

It isn't because of multiboxing. I've had 5 accounts active from vanilla through MoP and since classic launch without ever being banned. Even those of us who have had accounts suspended because of being automatically flagged are usually reactivated after an appeal. Especially if you haven't had any bans issued previously.

[Maximus94206]

What does the ban notification email say? Usually Blizzard will at least give you a category ban reason such as, "Involvement in online trading activities" or "Disruptive gameplay."

I can say it isn't because of multiboxing. I've had 5 accounts active from vanilla through MoP and since classic launch without ever being banned.

"Explotation of game economy" (RMT)

Maybe you were autoflagged. It has happened to me before. Just appeal and they should lift the ban.

They declined appeal