Hello from Sydney!
I just got this email from American Express offering a 30% discount on Membership Rewards redemptions for paid international flights through amextravel.com. This yields a redemption rate of 1.43 (1.0/0.7) cents per point, which is better than the rate for both the Chase Sapphire Preferred and Citi Thank You Prestige (unless you redeem for AA flights, for which you’d get 1.6 cents per point).
Previously this was only offered to Business Platinum customers and even then only for the airline designated for the airline fee credit, but now they are extending it to Personal Platinum customers on any airline for redemptions made in the next two months. The current offer expires April 30, 2016.
Not sure if it’s targeted or not — let us know in the comments if you got the email!