I know they are trying to stop the spammers, but they aren't doing a good job. Every night the chat box is full of gold seller spam. I've spent the past week reporting each and every spammer I see, but the gold sellers keep on coming. It's like they have an endless number of accounts, because as soon as one gets banned, two more take it's place.
It's gotten so bad, that there are add-ons you can install to stop receiving spam messages.