I was looking at my Amex Business Gold account page to check the Amex "Offers" when I saw an offer that mentioned the possibility of earning an extra 25K MR points. I was intrigued and followed the link that led me to the landing page for the offer:
a way to make that happen.
UPDATE: Just looked at the Ts&Cs:
UPDATE: While the full Ts&Cs indicate that gift card purchases don't count, I'm aware of some data points showing that they do actually count.