Until April 13, 2014, US Airways is offering a bonus of 100% on sharing between 30,000 and 50,000 miles between Dividend Miles accounts.

The US Airways Share Miles promo is typically the best mileage purchasing offer of the year.

Sharing miles works out to buying miles for 1.13 cents each.

Frontier has announced a 17% discount on domestic flights bought by tomorrow March 18, 2014 and flown by May 21, 2014 with promo code POTOGOLD. (Blackout dates of March 21-23, 2014; March 28-30, 2014; April 4-6, 2014; and April 11-13, 2014 apply.)

This 17% discount does not apply to Frontier’s international destinations like Jamaica, Mexico, Costa Rica, and the Dominican Republic.

To get to those places, your best bet is to redeem 15k Frontier miles each way.

Per the email I received last week, US Airways is again offering up to a 100% bonus on purchased or gifted miles. This "Mystery Bonus" promotion is a slight variant from previous iterations, as the bonus you receive varies by individual frequent flyer account. You might receive a 25%, 50%, 75%, or 100% bonus on purchased and gifted miles.

US Airways frequently runs promotions offering bonuses to buy its miles, including one in December of last year. The deal is hardly a new proposition, especially if you receive an inferior 25%-75% offer like I did.

Lufthansa is currently offering a whopping 10,000 Miles & More miles for a one-year print + digital subscription to The Economist. The offer details and sign-up page can be found here.

A one-year print & digital subscription to The Economist is $160 through the Lufthansa portal.

American Airlines is offering two stackable promotions for buying AAdvantage miles that allow miles to be purchased for as little as 1.98 cents:

Get up to a 30% bonus on the miles you purchase until February 28, 2014.
Get a 10% discount on the price of miles until tomorrow February 6, 2014.

How do these promotions stack? How do these promotions compare to previous Buy Miles sales? Is this a price at which you should speculatively buy American Airlines miles?

The miles bonus is tiered.

There are several posts on the new PointBreaks list, which allows us to book hotel rooms through March 31, 2014 for only $35 per night. Even if you’ve read those, read this. I’ve honed my strategy for getting $35 per night rooms quite a bit, and I want to share it, so everyone can have access to the best practices.

Per this thread on Flyertalk, Club Carlson is running a very interesting first quarter promotion. The full terms and conditions, as well as registration, can be found here. If you stay three nights at Club Carlson hotels between January 6th and April 13th, you will earn 38,000 bonus points.

What will 38,000 Club Carlson points get you?

38,000 points is enough for four free nights at a category 1 or one night at a category 4. The full award chart is below.

Until January 14, 2014, you can buy Frontier EarlyReturns miles from points.com with up to a 50% bonus on the miles you buy.

You can currently buy Avios for 1.37 cents each through a miles-transfer promotion.