After today's earlier thread on the subject, and numerous threads on the UA forum, I have become curious about exactly why this is true. This is not a: "why do they do stupid things like this?" thread, but simply curiosity. It doesn't matter to me, I have nothing of real value to sell
. I guess I always assumed that it had to do with tax law, and that airline miles, etc. were said to have no cash value so that earning them did not count as income. Same with upgrades and vouchers. But is there more to it than that? I first came to the above conclusion when I'd hear about Southwest, and how they'd include certs with something of miniman cash value so that you could sell that thing with certs included and not be selling the cert. Anyone with the full story on such policies?