I like this article over at Slate, Want To Save Your Favorite TV Show? Stop watching it on television, by Chadwick Matlin. Discusses how, unless you are a Nielsen household, no one has any idea that you are watching a TV show on TV... Unless you are watching a TV show online. Hulu? iTunes? They know. Suddenly your viewing preferences count. I am sure there is some decent discussion of samples and sampling in the survey out there somewhere. (It is a very technical issue, I've seen a Forrester senior analyst misinterpret the representativeness of a sample. Tisk.)