I just received "Final Notice" of my good fortune! It's a very official looking check-like document made out to US Airlines on behalf of ME, for $1,298.00! Upon closer inspection it says I can redeem this certificate for 2 round trip tickets to anywhere in the Continental US from any major international US airport. Of course, "some restrictions apply" you see, it's a limited time offer that may be withdrawn at any time.
I'm naturally skeptical of such gifts, but a big red flag was the statement they felt a need to put on the stub "this is not a timeshare or land sales offer". Okay, time to go to the Internet.
I typed in the words "US Airlines Travel Voucher" in the Google search box and found exactly what I expected to find.
These guys to a pretty good job of summing it up. - Fodors.com
Bottom line, as I suspected, nothing good will come from claiming this "prize".