Airline Evilness - from NY Times...

Korean Air and the Canceled Ticket - The Haggler

In early September, I saw a good deal on a round-trip fare from San Francisco to Palau, in the South Pacific, on Korean Air. I booked two tickets for February — one for me, one for my girlfriend — for $510 apiece. In the weeks that followed, we booked hotels and planned activities, and I bought an underwater camera. We were looking forward to a great vacation. (more)

So, Korean Airlines "mistakenly" sold a bunch of tickets at a low fare, and a couple of months later, unilaterally cancelled them.  They offered to honour them, however, for an additional $360.  From the article

What’s troubling is that this “mistake” fare was up on a travel site for at least four days. I know because we slept on it before booking, and over the next couple of days tried to persuade our friends to come with us. Then there’s this question: Why did it take Korean Air two months to figure out that it had posted an erroneous fare? The cynic in me thinks that Korean figured that the longer it waited to cancel our tickets, the more likely we’d be to cough up an additional $36

I'm expecting this stuff to turn a lot uglier, and soon at that. Our domestic airlines have already given up on being nice (they expect us to be cheesed off, so they really don't care).
If I were a US airline, I'd probably

1. Sell a whole bunch of tickets for each flight at a low fare
2. Sell the same tickets for higher fares as the travel dates approach
3. For each "higher" fare ticket sold, cancel one of the "lower" fare tickets
4. Repeat for an even higher fare, till I get to the travel day (when, I believe, the contract of carriage has all sorts of 'bump' penalties that the airline is liable for)

It probably just requires some deep TOS munging to get away with this...