Disillusionment is one of the life phases of TT forum membership. It is characterised by cynicism and dissatisfaction with the moderation of the forum, with other forum members, and with forum content in general.
A disillusioned member will occasionally make clear their disillusionment by announcing that they are leaving the forum for good. This is termed a flounce and is usually met with ridicule by other members.
Other disillusioned members don't flounce off the forum, although the non-disillusioned members might wish they did. Instead they hang around and moan about how bored they are.
The largest category of disillusioned members is probably those that simply stop posting and instead quietly get on with their lives.
Those that successfully make it through the disillusionment stage often go on to become Jedi.