well, no such thing here (at least not that I'm aware of)... I'd sign up in a flash though!! It's a tough thing though, I know people who have done time in telemarketing jobs, call centres etc and it ain't easy. Once or twice I've actually participated in surveys and I do try to get rid of them politely if possible.
Still doesn't explain how they know exactly when you've just sat down at dinner and call right then!