Something sort of like that happened to me once when buying something off eBay. I won the auction, and sent a money order, which I didn't sign, as I've been buying from eBay for years now and bought hundreds of items through it. Not once had the absent signature bothered anyone or stood in the way of any transaction in that time. But this one guy got on my case about it for some reason; sent me an email telling me that I didn't sign it. I write back saying it shouldn't matter and that if he needs a signature, I don't care if he throws it on there himself. He writes back a few days later telling me it's too late and that he's mailed the MO back for me to sign, and then has the nerve to alert the eBay admins that I've not paid in the alotted time, even though I had and he was just being anal about the signature.