Cactuar's novice network
When I started playing 14 again, I had to turn off cactuar's NN regularly, because it was a nonstop wall of text, and I was autoinvited because I was somehow a returner and mentor simultaneously.

It fills the dual role of global linkshell (11 and 14 are combined the least friendly and most counter-intuitive games for being social, so NN is likely the first and possibly only group chat you're ever going to see as a newbie) and new player help center, and while it always filled that role, it was a bit too much at times.