What are the best sites in Canada for winning prizes and entering contests?

canada contests sweepstakes

Question by Stretch: What are the best sites in Canada for winning prizes and entering contests?
I understand that there are businesses where you pay a certain amount a month and they add your name to all sweepstakes. How do we know they have done this, or are they just spending our money. What are your thoughts? I'm afraid to pay with a credit card. What happens if you want to cancel and they continue to draw money out of your bank account? Please enlighten

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