Originally Posted by
njarecki
What if you bought out first class on a bunch of flights? Took every seat available with a combination of partner and anytime miles. Think they'd be willing to buy some of the seats back from you for revenue passengers? Crazy, I know. Let's get creative, let's get nuts!

right, airlines will for sure give out 100% of their F seats on miles

The only safe way to 'sell' miles is within the family where you can't get maximum value, but at least you are reasonably certain that airlines won't catch you. Selling anywhere else including ebay is not a good idea.