Send your pics as postcards for free worldwide

Why go the donation route? Why not first one is free and future ones cost pennies? If people found it valuable they will pay for it. Going with free also encourages those that want to send ads to use your service and so you would spend a bunch of time stopping them while still not making money.

Lastly how are you printing the postcards?

Little bug where the wix ad element is covering up some of your text: http://imgur.com/wWjlOfd

Latest version of chrome