Tweet for Discount is a button that goes on your store and lets your store visitors write a tweet about your store, directly from the page. In exchange, they get automatically rewarded with a discount code of your choosing. Here are the easy steps:
Word of mouth is the most powerful way to get exposure. Give your online shoppers something to talk about — reward them for sharing your online store with all their friends and followers.
Note: A non-basic (professional+) Shopify plan is required to create discount codes.