Aerolineas Argentinas is cutting its Miami to Cordoba route in June 2016 and its routes from Buenos Aires to New York, Rome, and Barcelona at undisclosed dates according to these (1, 2) Spanish-language articles

Groupon Spain is having a sale on Iberia Avios, offering them for 1.38 cents each.
Iberia has a portal that allows you to earn 8 Avios per euro on the purchase of Groupons.
Those extra Avios bring the effective purchase price down to 1.26 cents each.
You can freely transfer Iberia Avios to British Airways Avios if both your Iberia and British Airways accounts are 90 days old.
Both types of Avios are worth well more than 1.26 cents each.

Preparation
The only three things you need to make this deal work are a credit card that charges no

Until June 3, 2016, you can buy Hilton HHonors points and get a 100% bonus on the points purchased.

Hilton points normally cost 1 cent each. With the 100% bonus, the price drops to 0.5 cents per point.

If you buy 80,000 Hilton points before June 3, you’ll receive 160,000 points for $800.

Last week I wrote about SPG's newest airline transfer partner. You can now transfer Starpoints 1:1 to Virgin America Elevate points and get 5,000 bonus Virgin America points for every 20,000 Starpoints transferred. That's particularly amazing because Virgin America is a 2:1 transfer partner of American Express and Citi (eg 20k Membership Rewards = 10k Virgin America points.)

One of the best deals with Virgin America points is flying Virgin Australia from Los Angeles to Sydney or Brisbane.

Last year I predicted that award space to Air New Zealand would be much improved in 2016, especia

American Express added Etihad Guest miles as its 17th airlines transfer today.

You can send Membership Rewards in increments of 1,000 points to Etihad miles at a 1:1 rate.

Etihad Guest is already a 1:1 transfer partner of Citi ThankYou Points. In November 2015, we saw a 25% transfer bonus from many programs including Citi ThankYou Points to Etihad Guest miles. I expect if we see a future transfer bonus like that, American Express Membership Rewards would be included.
Uses of Etihad Miles
Etihad Guest miles are NOT good for booking Etihad flights.

Qatar Airways First Class on its A380 is available nearly every day between Paris and Doha and widely available between Doha and Bangkok.

Club Carlson is offering up to 50,000 bonus Gold Points on eligible stays completed through July 31, 2016.

Club Carlson is the loyalty program of these brands.

You earn bonus points for two, five, ten, and fifteen eligible nights:

Eligible nights are basically paid nights.

Delta is offering discounted flat bed Business Class awards to Europe this summer on select routes. The East Coast and Midwest routes are 105,000 miles + taxes roundtrip. The West Coast routes are 115,000 miles + taxes roundtrip. The normal price is 125,000 miles roundtrip (although I am basing "normal" on the old Delta award charts.

You can now use Malaysia Airlines miles to book Emirates Economy and Business Class. Malaysia Airlines is a 1:1 transfer partner of Citi ThankYou Points. 

Malaysia Airlines started up a partnership with Emirates in the end of last year, but they just released mileage earning and award redemption charts in the beginning of this month.

For Emirates flights, Malaysia Airlines uses a distance based award chart. The price of your award is determined by the cabin and distance flown, which you can check on Great Circle Mapper.