The spam filter kicks in for posts in rapid succession. For example, if you post and then try to edit it a couple times right away, then you'll get a "Waiting for Approval" message and your post will be sent to the void for awhile (and Robot is closed over the holidays so no one can release it from the void). Give it 30-60 second between post (I don't know the exact time) and you should be able to dodge the spam filter.
Bad Monkey said:
I suppose our minds move to fast for them! lol