Read the comments section. It will explain that many Arth related posts are NOT in the Arth Thread, but a few threads outside. Also, given soon to go beta Strolen 2.0, which will automatically break up the main Arth Post, I have stopped breaking it up... and have refined a few spots... most notably MaskLand and ForthLand.
Thus this is not a "dead forum".
So go on... read it.