I would warn against using the busy marker actually.
When you are /busy, the game blocks all tells from reaching you without sending any feedback to the person who is trying to get in touch with you. Nor does it tell you that someone tried to send you a message.
I found this out the hard way.
When you are /busy, the game blocks all tells from reaching you without sending any feedback to the person who is trying to get in touch with you. Nor does it tell you that someone tried to send you a message.
I found this out the hard way.