Most questions about a coupon site come down to three things: how to apply a code, why one was rejected, and how current the list is. This page answers all three.
Applying a code
Click Get Code on the offer. The code is copied and the retailer opens in a new tab. Add your items to the cart, then paste the code into the promo code field at checkout — the field name differs by retailer, and each store page names the exact one.
When a code is rejected
Check the order against the offer conditions first: most rejections are a minimum spend or an excluded brand rather than a dead code. If the conditions look met, try the next code in the list — each one carries the date it was last verified.
Offers with no code
Anything marked Deal has nothing to paste. The discount is applied on the retailer's side when you arrive through the link, so open it from the deal itself rather than typing the address by hand.
Still stuck
Tell us the store, the code, and what checkout said. Reader reports jump the queue, because they are the fastest signal we have that an offer has expired.