Happy 7th Birthday, Facebook! In honor of Facebook’s birthday, we’re giving our fans a birthday coupon for a FREE Brownie Sundae. Facebook gives us the opportunity to stay connected, and we’re excited to give this birthday present to YOU. The coupon is redeemable through Thursday, Feb. 10, so when you’re out for the BI…G GAME or eating with your family next week, stop by Chili’s for a dessert! CLICK HERE for coupon