Photo Contest: Why do I have to register to enter or vote?

You must be willing to register to enter or vote so our system can identify you and prevent people from coming back to enter more than once per week or voting more than five times per day.

• Photo Contest: How do I get my family and friends to vote for my photo entry?
• Photo Contest: I live in Canada and want to enter the photo contest. How do I enter?
• Why am I receiving an error message that says "this e-mail address is already registered" or "this login is already registered"?
• Photo Contest: How often can I enter the contests?
• I downloaded the app before August 12, 2011. How do I subscribe, or register my existing print subscription?