Happy Momma, I'm glad they fixed the mistake. I think that as long as the reader feels that you're looking out for them, they would probably not hold a grudge. If it happened again and the company was unresponsive, I'd probably CC the winner on any emails that I send and if the company didn't cough up the prize within a reasonable time frame, I'd rip them a new one on my blog. I'd also probably send a letter of apology to the winner and I'd maybe include a small gift (whatever I could afford).
Thanks Michelle- great advice!
Audrey- any news on the iPod?