Really...what difference does it make to you if they asked you to sign the check and now it may be useless to them? When I have used the checks every place is different, every place gets confused, every place looks at me like I have 10 heads...some say sign, some say don't sign, some do it as a coupon, some as a check, some a line item discount because they can't figure it out. To me...I could care less, just take the money off and I will be on my merry way.