A little while ago we received the very kind gift of a Borders gift card. Unfortunately, this was made out in US dollars and marked as valid for all US Borders stores. We live in the UK so this is not much help.
Luckily, according to the card, the credit was also valid for purchases on Borders.com, so off I surfed to choose some books from "Borders teamed with Amazon.com". All well and good -- international delivery would be a bit slower and more expensive, but no problems.
When I got to the checkout and entered my gift voucher number and credit card details, I was told (by Amazon) that my voucher code only worked with Borders purchases. OK, so I went back and reselected my purchases, making sure that they came from Borders pages rather than Amazon (difficult to tell what was what), only to get the same error at the checkout. After another try I gave up.
Visiting our nearest Borders, in Oxford, we had a chat with a customer service guy, who said that at the moment US and UK Borders shops are effectively separate companies, and that Borders.com and Amazon.com are in the process of merging, with much website confusion in the meantime.
Luckily, the in-laws are off to the US soon, so they can make use of the voucher on our behalf. Ho hum...