If you want to increase the exposure of the business and allow customers to promote their products do not hesitate to make use of the site's social media features.
From the Admin Control Panel (Settings -> Site Settings -> Social Media):
If checked, you will be able to add your website's corresponding social media pages.
If checked, allows users to use the widget to share their social media profiles. In addition, when selected it gives you the option to choose which category of users will be able to use it: all users, verified users or store owners.
Enter your social media links for the following platforms: Facebook, Twitter, LinkedIn and Instagram.
Now, after listing a product, both customers and visitors can use the available social media buttons to share a product. Currently one can share on Facebook, Twitter, Google Plus and Pinterest. Moreover, for those that want to send listings privately there's also an email option.
Let's assume you want to share a listing on Facebook. Clink on the social button and you'll be prompted with a preview page (within Facebook if you are logged-in) where you can add your own thoughts about the listing before actually publishing the post.