Almost immediately JCF was raided by furries as part of the same pedophiliac wave that created 4chan. You can follow the chronicled endeavors of said pedophiliacs by reading up on the histories of websites such as SomethingAwful.com, Rotten.com, Newgrounds.com, GameFAQs.com and so on.
The furries stuck around, some of them requesting to be granted mod status. Eventually, one of the furries deleted all posts on JCF, slightly after a discussion started around fairies. I interpret this as Kobolds being afraid of the Fae.
JCF was quickly followed by Helix Games Community, another board for the discussion of Thorson's games. At this point I no longer paid attention to the behind the scenes, focusing on collecting the files instead. Eventually HGC was shut down and Sulsay (LT) let Dabomstew's new site become the main platfrm for the Thorson circlejerk.