aheadWorks Co. is glad to bring to your attention the update of the Refer a Friend extension. A long-expected feature of the discount usage limit is implemented in Refer a Friend v.1.2. Now it's possible to allow using the earned discount, e.g. only once to encourage people to invite more friends and earn a discount again or implement other referral discounts policies. The extension became even more flexible to meet any store owner needs.
Find more details at the extension page.