Great for those annoying plastic rebate cards
I had one of those ridiculous rebate reward cards.  I was actually able to use it to make a purchase on another website, since the total was below the card value.  I had .51¢ left over and really didn't want to torture some high school cashier to figure out how to apply this measly .51¢ to my order, so I just added the card to my account and did a reload for that .51¢.  Sure, it's only mere change, but use it or lose it.  Done in a few minutes.
Rating: 5 stars