The first point is to win 1000 Aeroplan Miles. You just have to like their Facebook page using your Aeroplan Member number, and use any of the featured Aeroplan travel partners.
The second point is to win 200,000 Aeroplan Miles. In addition to the above, you have to choose your favourite cities and the Aeroplan partner hotels in those cities, as well as chose the restaurant and the sight you liked the most.
To find out more, visit Aeroplan’s Facebook Page.