YITH WooCommerce Share for Discounts (Premium Plugin):

In the social network age, the keyword is “sharing”. A simple and immediate action that gives exposure. Therefore, why don’t you take advantage of being the one promoted? With this plugin, your customers will be very happy to make you known on their social network profiles. This is because in return for their kindness you could offer them a discount code. The discount code will be used to make purchases on your site.

The sharing system is simple. A single click is enough to publish on your profile the page you are viewing. So, your customers are encouraged to publish the pages of your e-commerce site on their profiles. Your exposure would increase enormously, getting more people without any effort.

Then, how could you get this advantage? The plugin has a winning solution for anyone. For each completed sharing, your customers will benefit from a discount applied to their cart.
In this way, not only you will loyalize your recurring customers or the new ones gained with the sharing. But you will also have happier and happier users willing to share your products to purchase new items!