Small social advertising group for clients?

[Jake]

That will tend to be a labor intensive promotion method with less opportunities or profit expanding automated techniques like some aspects of SEO. Writing skills and a social knack wold be important qualities, to earn more than a moderate wage you would probably have to outsource a significant part of the in the trenches work with freelancers from marketplaces like elance, odesk or freelancer.com

A web search for: social media marketing service should get you lot of examples.
http://www.businessnewsdaily.com/2596-so...vices.html