[Merriweather]

I am looking for either a mod that would allow certain usergroups to have a second signature OR a pay-to-post mod that works in 3.6.8

Basically, I want to allow users to advertise their personal businesses, but I want them to have to pay to do so. I thought I could either (1) set up a subscription that allows the user to have a second signature and that would be where they are allowed to place links or info about their home businesses OR (2) set up a pay-to-post forum where they have to pay to make a post and that is where they could post about their business.

Does anyone know of any working mods that could do either of these things -- or something else I haven't thought of?

Thanks!