Yes, I'm actually one of those people who fill out surveys on their receipts for gift cards, cash prize, etc. The way I look at it is someone has to win it, why not me?
I just got done with a survey for Target. At the end, they want you to fill out how you want to be contacted - either by phone OR email. I don't understand why the OR is there because you can't enter the stupid contest unless you provide both. If you want both, then why give the option for either or? Makes no sense to me.