It seems that line is the most popular chat app. Than discord. I, in the other hand. Prefer discord. Not much for line.
Select any Section, for example http://avabelforums.com/forums/new-member-introductions.2/ and click on "post a new thread" button on top-right corner.
In a way yes, and in another way no.. Currently Rayleigh already stopped with the game and Forum... Sadly :( And Vash has been missing from earth since a few years.. :/