Sorry, because I'm sure it's in here somewhere, but when I've looked at trading flight miles using points.com, it appears to be a rip off. You get some ridiculous low number in return for giving a decent amount of miles. I'd rather give them away or let them expire. What am I missing? This also applies to buying extra miles directly from an airline. Unless you're 1,000 points off from a free flight, buying the miles quickly adds up to the published fare of a flight with no miles needed.