For more information about cyber scams, visit the FBI's E-Scams & Warnings webpage. You can sign up there to recieve email alerts about most recent scams by clicking on the red envelope at the top of the webpage.
Be careful when purchasing gift cards through auction sites or classified ads. It is safest to purchase gift cards directly from the merchant or retail store. If the gift card merchant discovers that your card is fraudulent, the merchant will deactivate the gift card and refuse to honor it for purchases. Victims of this scam lose the money paid for the gift card purchase.