American Express Co. is trying to encourage the use of gift cards among fans of consumer electronics by offering a free card that can be used at several electronics retailers to people who buy five Amex gift cards. The New York financial services company announced the promotion Wednesday.

Through Dec. 31, people who buy five gift cards at once online will be eligible to submit a rebate request to receive the $25 Gadget Lover's Card.

The Gadget cards can be redeemed three months after they are issued and can be used at electronics chains including Trans World Entertainment Corp.'s Sam Goody and Suncoast units and Sharper Image Corp.

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