Anyone can flag a post that they believe is off-topic (or otherwise in breach of the forum’s Code of Conduct by clicking on the three dots under the post…
…then clicking on the flag…
…and specifying why you’re flagging the post:
Flagged posts are added to a moderation queue for @decentralistdan and I to review.
Depending on the Trust Level of the user flagging the post, it may be immediately/automatically hidden, pending review by the moderators.