After read this thread Mixers to be banned, there's a question popped into my head.

Which site or forum that these centralized mixers will promote their projects?

Or these mixers will don't have any medias to promote except volunteering by themselves? maybe using hire someone who willing to shills/spams?

AFAIK there's no rule to promote other site or forum in Bitcointalk, maybe if someone know about decentralized place, feel free to suggest and it might help the mixers.