Groupon- FREE Deals for your City

I am not entirely familiar with Groupon, but I know several people who have checked it out and love it. From what I understand it notifies you of great deals and savings at stores or restaurants in your area. So if you're interested in it (I just signed up today) sign up and receive a daily email with coupons for savings at up to 90%. More info is HERE. If you already participate let me know! I have friends who got $50 bowling packages for $15, or got a $75 dinner gift certificate for $25.