UT, formulate your IotD criteria and a submission procedure. Reduce these to writing in simple language. Send it to each spammer that hits on the Cellar. Offer one day of posting [solicitation] privileges in exchange for each published [successful] IotD submission.
Let someone else do the legwork for you by turning a negative into a positive. It's for a good cause and a little spam never killed anyone
(at least no one important).