Gold spammers problem would be easily solved if one player blocks the spammer and all his messages are not received.
The problem is that blocking someone, does not stops you from seeying what the person is talking, meaning that the issue is not solved.
Please change that.
By the way, as a side suggestion, you guys should make a log to check whose players are sending a high number of messages per second, so be able to investigate and find gold spammers.