The Canon loyalty program is something where you can get 20% most refurbished Canon cameras by trading in any old, used Canon camera (point-n-shoot, DSLR, digital, film, etc) even if it's broken. I don't think all the refurbished cameras qualify but most do. You have to call Canon to verify what qualifies and if it's in stock. If you want something you also pay tax+shipping on the discounted price of the refurb being purchased. But I think they send you a shipping label to send them the old trade-in.
Overall it's a pretty sweet deal, IMHO
The number for the Loyalty Program is 1-866-443-8002
Here's a link to Canon's refurbished products.http://shop.usa.canon.com/webapp/wcs/stores/servlet/subCategory_10051_10051_-1_34263
btw - I've heard of some people picking up an old broken Canon point-n-shoot or film camera in a pawn shop or off craigslist for dirt cheap and using that to get 20% off a nice DSLR.