Customers who want to take advantage of the deal have to register for the Share & Earn Facebook app that can be found via the brand’s Facebook page.
Facebook users can then post products they "like" to their Facebook wall. If their friends buy the products after clicking through the Facebook post, both the sharer and the purchaser will earn Clubcard points for the purchase.
and uses its page to promote promotions such as discounts on goods ordered online and competitions to win Tesco products.
Matthew Entwistle, marketing director for general merchandise online at Tesco, said: "More and more of our customers are using Facebook to chat about and recommend products they like from Tesco Direct."
The trial comes after Tesco chief executive Philip Clarke revealed he was planning on putting Clubcard operator dunnhumby back at the centre of its business.
Brands are increasingly turning to schemes that reward customers to promote products via social media.
Dell launched a "share and earn" scheme in April that enabled customers who promoted Dell products to earn £5 if one of their "shares" led to a sale of a Dell product worth more than £70.
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