Lately I've gotten several emails that feature a common mistake.

I really like my passport.

Frontier has announced a 10% discount on domestic flights bought by Thursday April 24, 2014 and flown by September 21, 2014 with promo code SPLASH. Blackout dates of May 22-23, May 26, June 29, July 3, July 5-6, August 28-29, and September 1, 2014 apply.

This is Frontier's first fare sale for summer travel dates!

This 10% 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.

Southwest and Chase market their Southwest card in a misleading way. The big bold letters say:

The 50,000 points the card offers in no way correlate with two roundtrips.

There is currently a 30% transfer bonus on Membership Rewards transfers to Virgin America.

Until April 30, 2014, 200 Membership Rewards transfer to 130 Elevate points. (The normal rate is 200 Membership Rewards to 100 Elevate points.)

What are the sweetspots on the Virgin America chart that might make a transfer worthwhile?

Taking advantage of this transfer bonus is not a good idea if you want to fly Virgin America domestic flights.

The Hilton HHonors Signature Card's (the one that earns points) sign up bonus has expired. Click here for the top current sign up bonuses.

A lot of people will love the benefits and sign up bonus on the Citi® Hilton HHonors™ Visa Signature® Card.

The card comes with automatic Hilton Silver status, which earns a 15% points bonus on Hilton stays, late checkout, and free access to fitness centers.

MileValue has gone down twice in the last week.

The site was down for almost 48 hours starting last Wednesday because I screwed up while moving the site to a private server to keep up with growing readership.

Luckily a loyal reader helped get the site back up about 24 hours earlier than it otherwise would have been up. Check out @pcg on twitter. He's a wizard with WordPress and web hosting (and judging by his twitter handle, an early adopter of twitter.)

Yesterday, the site also went down for about 12 hours.

Frontier has announced a 15% discount on domestic flights bought by Thursday April 17, 2014 and flown by June 12, 2014 with promo code REFUND. Sale fares apply every day except Fridays and Sundays.

This 15% 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.

The last year has seen all four of the American legacy carriers make their miles less valuable.

Delta bumped its business class awards up in price.
United put premium cabins on partner airlines out of reach.
US Airways went to the slightly inferior oneworld alliance from the Star Alliance, then bumped up the price of roundtrip business class awards to North Asia.
American eliminated its Explorer Awards and free stopovers on all awards.

But great value awards still exist with all four types of miles.