@Walgreens and @foursquare offer mobile coupons / check in get 50% off!
Walgreens is teaming up with FourSquare to offer customers who check in at any Walgreens store unique scannable coupons. When you check in the customer will get a unique coupon which can be redeemed at check out. Nice to see a large retailer embracing social media / location based geo services. Next question, does Walgreens have free wi-fi in their stores?