First of all, no idea why the original Expedia refer-a-friend thread is closed. And closed without a single comment from the moderator at that.

Anyway, I have a couple of codes left, and just went to make a booking. I think the code I'm using is valid -- at least I don't recall using it. But no matter what I do, I get the dreaded 'this voucher has already been used' error. I've tried various email addresses, etc, but to no avail.

I think the booking date is (before) Dec 31, with stay by March 31, and I meet both requirements. I booked some last week without issue.

Anybody else having problems? Suggestions?