Facebook Page for the Offer
The only one I can see currently on my account is when you go to the Old Navy Gift cards and select the $25 Gift Card and hit the "update" button. Red text shows up on the page showing that it costs only 2000 pts.
See update in post 3 about an error in the promo that Amex is currently trying to fix. Might explain why some accounts aren't seeing it.
but for select customers and possibly owners of different cards this offer is showing up: (might be a targeted offer)
must select card with exact amount and click "Update" button.
$25 Gift Cards for 2000 pts
$50 Gift Cards for 4000 pts
Barnes & Noble
$100 Gift Cards for 8000 pts