18+ It's never easy to promote goods and services in Equestria. Companies and individual vendors are struggling to get their stuff known with the population, often to no avail. However, there is one company that offers to advertise anything up to the point it dominates the market. Ladies and gentlecolts, welcome Heartstrings & Co, from the heart of Manehattan.

/Crossovers with Mad Men: the story takes the basic concept, but will follow a different plotline. Set in the alternative 60s Equestria.
Edited by Syvvak