(Patrick Carlson)Every year, the super-consultants at Deloitte LLP ask people whether they’re interested in receiving and giving any gift cards this holiday season. We used to love the concept: Back in 2007, 69% of people said that they were interested in receiving the plastic cash replacers. This year, that number is down to 37%. Results of different surveys differ, which indicates that maybe small surveys aren’t accurate for this kind of thing, or that the answers really depend on how a sample is selected, and on how questions are worded.