This is the link to the offer:
http://www201.americanexpress.com/ge.../Platinum-Card
I called Amex last night to check if the offer was still valid and was told that it expired Jan 10. It's still on their website and being offered through other partners as well (e.g., Mint.com). If I apply for this Platinum card, am approved and fulfill the spending requirement, will Amex honor the 50k MR Points offer or won't they?