One popular site is called Cardcash, where users can either exchange cards for different ones or trade them in for cash — ...

Know the rules, then use them fast: Balances last 5 years; inactivity fees after 12 months; some states cash out small leftovers (e.g., CA $10) Buy low, sell smart: Warehouse clubs = easy 20% off; ...

The scam involved websites which advertise paying a person in exchange for unwanted gift cards but, ultimately, do not pay up ...