People tend to check in during these times:
Sports Authority is the nation’s preeminent full-line sporting goods chain. Shop online or in-store for all your favorite brands.
USE the foursquare special. Check in, spend $100 you get a $25 gift card. Special is good EVERY time you check in.
If you get a survey with your receipt, fill it out! You get $10 off your next purchase of $50 or more that you can print out right when you're finished! Please leave a nice comment about Sarah :)
They didn't even know what Foursquare was, so they wouldn't honor the special offer. Obviously their training is lacking.