Comment Unreliable data (Score 4, Insightful) 149
Anything that relies on voluntary responses to surveys is going to be unreliable, as it's going to skew towards the kind of people who respond to such surveys.
Most people don't want to waste their time with such things, especially if there's no reward for doing so. A lot of people will also be suspicious and suspect phishing or some other kind of malicious behaviour. They need to find a more reliable way to get information.