Peter Borger and Salty at least make claims that are worth taking a look at, even if they also make a lot of claims that they cannot support, evade important issues and misrepresent opposing views. Granted the main point to looking at them might be to expose the errors, but at least in Salty's case there might be something worthwhile amongst all the dross. They may be more work than they are worth from a moderator's point of view but they are not COMPLETELY worthless.
Compared to drummachine, to use one example, there is at least a CHANCE of discussion even if it may be more work than it is worth. So far as I can see drummachine is a complete waste of time, and the only reason he has not been suspended is the lower volume of posts that he produces and the fact that he is so obviously a waste of time that he is easy to ignore.
On an unrelated point, might I suggest that if "Free For All" is used as a "dumping ground" as proposed, that there is an option on the main page to list topics from the moderated fora only (i.e. like "list all topics" but excluding "Free For All").