To celebrate the launch of its new Domino’s Stuffed Crust, Domino’s Pizza has embarked on  two social initiatives to spread the word – a location-based offer integrated with Facebook Deals, and internet-based treasure hunt, Domino’s Stuffed Crust Quest.

The Facebook Deals promotion started yesterday and offers a free garlic pizza bread when Facebook users check in to any UK Domino’s store and order a Domino’s Stuffed Crust. To claim the free offer, customers simply need to present the check-in screen on their mobile to the order taker. By checking in with their Facebook account, pizza lovers can also publish it back to Facebook and share it with friends.

The Domino’s Stuffed Crust Quest will launch later this week. The interactive challenges Domino’s fans to follow clues around the internet during a limited time period to collect a series of letters. The letters will spell out a secret code that can be redeemed for a Domino’s Stuffed Crust bounty. The quest has been integrated with Domino’s Facebook Page, where the first clue will be released in the next few days via a status update.

“We’re delighted to announce the integration with Facebook Deals and Domino’s Stuffed Crust Quest to generate additional buzz across social platforms and encourage pizza lovers to get onboard with our new product,” says Domino’s sales and marketing director, Simon Wallis. “We know that our Facebook fans love to interact with us and hope these activities will really help to whet their appetite for our new Domino’s Stuffed Crust.”

You can start the Domino’s Stuffed Crust Quest here.