I've never been a huge fan, either! It's never worked in my favour and I've never known anyone to get anything out of them. It's weird you should say you always thought it was just a ploy to get people to spend their points, because that's exactly the same conclusion I eventually came to. I remember when I started doing YouGov, I would always put my points towards the sweepstakes, but never ever won. I carried on like that for a while until one day I woke up and smelt the coffee LOL I felt like such a mug when I finally had that lightbulb moment!