Blizzard have clamped down on real-money raid and dungeon clear sales, specifically calling out players in top guilds and handing out bans. It seems it was mostly US and Russian top guilds affected so far (but not Exorsus), and the account actions range from 8 day suspensions to permanent account closures, and they've affected both players participating in these sell runs as well as those that advertised them. Blizzard also make sure to mention the other big no-no top guilds have been accused of in the past, account sharing, as something that will be policed more consistently, making this a clear warning that they intend to take these types of offences more seriously. They also make sure to mention that using gold for these same practices is fine. In case you were wondering specifically, no Method players have been affected. Check out the full post:
If you see people advertising these services, please help us keep the game clean by reporting them. If you’re unsure, here are some common warning signs:
A “broker” is offering to match buyers with service-providers. Commonly, a broker will collect real-world currency from a buyer while offering gold to a guild or group that will actually provide the service.
Someone offering a service is unwilling to discuss terms of payment via in-game tells, and insists on using a non-Blizzard application to communicate.