They won't promote you unless you have a relationship to leverage within the company, or unless you are a large brand who can bring more eyeballs to their site with your campaign.
@Rachael, let's shout from the rooftops ... and louder you do , better you reach ... @crmatell , Right and don't give up ... selling a good product is tough anyway ...
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Word of mouth is definitely the grassroots way to go, but can take some time to jump start. However, having a solid product will help cause your direct network to promote for you.