Macaroni Grill is actively trying to grow their e-mail list. If you are signed up for their e-mail, they just sent out a unique offer. Get 5 of your friends to sign up for The Dish (their e-mail that shares deals, coupons and new menu items), and you will get $5 off at Macaroni Grill. If you get 5 more friends to sign up, you will get an additional $15 off at Macaroni Grill.
This offer expires on August 31, and referrals must have a valid e-mail address and be a new subscriber.
(Note: That is my affiliate link. If you don’t feel comfortable clicking on it, you can join their e-mail list driectly at their site.)