From what I can tell these became posted beginning of December 2004 in other forums. So it might/should? be a Viable Coupon. But no mention of expiration or source. Cozmo
This Coupon has been disabled from what I can tell so I beleive this was a flaw or something that they overlooked. Sorry about that but it worked for a few days. Did anyone else download it?
My guess is you're probably right. Unless the coupon was a visible one with details (where the code originally came from) with an expiration date for it.