Walgreens Donates Flu Shots after a Visit to Its Foursquare or Facebook

"For nearly a month, every time someone checks in at a Walgreens on Foursquare or Facebook Places the retailer will donate a flu shot to an uninsured, underinsured, or financially in-need person," according to a post on ClickZ. "The initiative will run nationwide and in Puerto Rico from Sunday through Oct. 8, Adam Kmiec, the brand's social media director, told ClickZ News." Read more.