I have a suggestion : create a Ponzi section and not allow newbies to create a post in this section, it will mean that only bitcointalk members that have been here for a while can post and create a new ponzi, that will avoid a lot of chea.p scams

Ponzis are a gambling game, I don't think they are way more evil than regular gambling if the owner is not luring people into thinking it is an investment and if he is not running away with the money.