There's little one can do against sweatshop meatbags aside from making their operations much more tedious and slow.
Post-edits can be easily be forbidden for newcomers. This way, only confirmed and therefore safe posters should have the privilege of being allowed to edit their posts at a later date.
What defines a safe poster? It should be both a matter of time and quantity of posts. The former parameter would certainly avoid a newcomer to spam seemingly unobtrusive posts only to increase his post count.
Captchas would be reduced or lifted for safe posters.
This shall add an extra layer of filtering and would make fairly obvious the posters who seem to type in nonsense or barely useful posts; I saw some of that type lately, they're mostly "supportive" posts like "great!", "me too!", "very useful thx" and similar crap.
@Djaydino
Are you officially attached to the Playmaker staff?