Get 20 Air Miles for answering a short survey. If you signed up to receive emails from Air Miles, they might have sent you an invite. I just finished answering it, it took less than 10 minutes and said that the bonus miles would be credited in 120 days. A copy of the email I got is below.

Dear goldenkagi,
Welcome to the most recent AIR MILES® Online Survey.
As an AIR MILES® Collector, your opinions have a tremendous influence over the availability, marketing and success of products and services. That's why you've been selected to take part in this survey.
You'll find this optional survey should take about 10 minutes of your time. And upon qualification and completion, you will be awarded up to 20 AIR MILES® reward miles.
Please start your survey as soon as possible as there are only a limited number of surveys available. Thank you for participating in this survey.
*link*
If your e-mail does not support hotlinks, please copy and paste the complete link into your browser:
*link*
Your privacy is of the utmost importance to us. You can read our complete privacy policy in the "Privacy" link below.

The AIR MILES Reward Program Team