I just read that of the $20 billion gift certificates and gift cards purchased each year, 10% ($2 billion!!) goes unredeemed.
That's an amazing amount, don't you think? I've never not redeemed a gift certificate or card.

The article went on to state that this year more stores are putting restrictions on redeeming gift cards. Barnes and Noble's gift cards reduce in value by $1.50 each month. Many companies are putting a 4 month time limit on redemption.

So, have you ever left a gift card go unredeemed, and why would you?