Anti Spam(er) Idea for Kompoz and other similar sites.
Give posts weights, somewhat like slashdot does but not with voting on posts like they do.
Known good users post at level 2.
New users and suspect users post at level 1.
Non-logged in users only see level 2 posts. Level 1 posts are invisible to the world.
Level 1 users see level 1 and level 2 posts.
Level 2 users default to seeing level 2 posts only but can change this behavior via a profile toggle.
Perhaps even have level 1 accounts invisible to the world?
all the best,