I was literally interviewed for this exact position for a real estate company in Maryland. I answered an ad on Craigslist for the interview. However i find it ironic that they separated the grassroots effort of posting the position online from the efforts associated with social media promoting. They aren't much different. My approach has always been to go directly to your market as a PERSON (even company mascot), not a company. There essentially is no such thing as a social corporation. A corporation is a lifeless entity with a fancy sticker on it. First you must identify the market if you hadn't already. Secondly, segment this market into easily recognizable archetypes. Thirdly, look for these archetypes in the form of market MICRO influencers in your region. From here I may attempt to make this group into customers through cold calling about partnerships. Make sure that the PERSON/mascot that the influencer is promoting relates to the EMOTIONAL needs of your markets. (This may cause you to revisit your value proposition and product core design strategy) Instagram has a whole sector dedicated to partnering programs to make it easy for influencers to promote your brand without defying FCC regulations. This is just one very general example. Feel free to inbox me. I have more ideas, however I would need to know a little but more about the problem you are trying to solve.