You can now require that users share your offer to get a coupon. When you’re adding an offer, you’ll notice a new option called Require Share. The default value is do not require sharing, but you can change it to require the user to share your offer link on Twitter or Facebook (with skip).
When the user is completing the steps to get a coupon, they will see a default status update that they are free to edit as they choose. The only requirement is that the url of your offer must be present to receive the coupon. Once they click post, your offer is posted to their Twitter or Facebook account where their followers and friends can see it.
Like other offer settings, you can combine sharing with other requirements such as requiring a user to like your Facebook page or follow you on Twitter. Go ahead and give it a try! http://woobox.com/pcnfo6