Brilliant concept, and definitely handy these days. I was thinking it could also be nice to keep a short log of messages received and maybe filter automatically any recent duplications. I've noticed gold spammers can be very creative with how they advertise, but they'll literally flood the channels. At least if a duplicate is picked up it can be ignored automatically. It could be a toggable option to remove duplicate messages, or have a popup when a duplicate is received asking if the player wants to ignore further messages of the same.
Galuhad, Lore Breakers, Evernight (formally of Eldar RIP)