Here's the background: a great number of airlines used to participate in a "two-way" street with Hilton, allowing members to buy HH points with miles, or AA miles with points. The buy-points-with-miles side of the street has narrowed considerably over the years, and there seems to be in my view some relationship to airlines filing bankruptcy. With United, for example, the option to buy HH points with miles went away in 2003, about the time United went into you-know-what, and it doesn't look like it came back when UA finally emerged. In fact, according to the HH website, the only airlines (and rail company) that still are allowed as converting miles to points are: American Airlines Amtrak CSA Czech Airlines Hawaiian Airlines® Icelandair Mexicana Airlines Virgin Atlantic Airways, and I really think someone just forgot to strike Mexicana from the list! I'm wondering if AA will drop from that list now that it too has entered the Eleventh Chapter. This is somewhat academic to me personally, since I have never bought HH points with anybody's miles, and don't plan to. I have gone the other way numerous times, and the list of eligible airlines in that direction is still quite substantial.