Re: Change a topic into self-moderated retrospectively / add polls retrospectively
IMO - It has to be one of the most effective solutions if the OP can no longer prevent spammers from bombarding non self-moderated thread. Meanwhile the OP can also report some spam posts in the non self moderation thread if he doesn't want to create a new one.
Some projects and their representatives in forum do the same too.They created a new announcement topic, announce it in a past topic, lock it and move onwards with a new one, that is self-moderated.
I also see some projects do an opposite: initially they create self-moderated topic, later after community complains, they locked it, and create a non-self-moderated topic. I believe they did not know about the procedure I shared above (move it to Meta the move it back to where it belongs to)
