For a limited time, get 500 free Kellogg's Family Rewards points by taking this short six question quiz. I had to log-in first, then paste the link for it to work. If you're having the same trouble getting the quiz to load, then here's a plaintext version for you to copy and paste into your browser.
You may not see the 500 points added to your account automatically, but no worries. The fine print says points are awarded within 72 hours.
In addition to the free points, taking this quiz also resets Kellogg's clock to losing your points.