Wendy’s is giving away free burgers — Dave’s Hot ‘N Juicy Singles with the purchase of a fry and a drink with a coupon good at participating restaurants (click at bottom for coupon). The coupon is offered through Facebook.com. As many of you know, Wendy’s just redesigned its burger, offering “juicier, thicker beef” with premium toppings and a new, buttered bun. Click the link on Facebook and scroll down to the lower, left-hand corner and you’ll see the orange square saying “FREE Dave’s Hot “n Juicy Single” coupon. Click it to print your coupon. The coupon expires on Oct. 21.