The thing is that now I've got two users spoiling my topic with incoherent rambling while other users posting announces without providing any method of escrow don't get any of such commentaries.
Start a new topic, and make sure you check the "Self-moderated" box under "Additional Options" BEFORE you click post. Once you click post, you can't go back and change it to self-moderated.
This way, you can delete posts made by trolls!