Ok well you said one part of it:

mindless annoying spam (like this forum)
Also I am anticipating this game's growth if its going to succeed so that's doubly and triply true. Also the fact that you can't talk with the entire server makes the world feel larger for me personally, like there are people out there I don't know exist and they don't know I exist. And lastly, I've seen it used in other games and It annoyed me more than anything, everyone is always talking over each other, spamming WTB/WTS, etc. etc. but that's just me.