I have to turn on /busy as soon as I log on or else I get an annoying message once every 30 seconds - 1 minute. This prevents me from seeing tells from actual players and also I have to drop /busy whenever I need an invite from someone.
Is Square Enix going to do more to combat gil sellers? I play WoW as well and I can't remember the last time I have received a whisper from someone trying to get me to buy gold. They obviously did something to kill gold sellers in that game because it's not a problem anymore, at least not on the server I play on.