You would like other to pay for your Diamonds? Now we got exactly the right payment method for you: Sponsorpay! They pay for your Diamonds and all you have to do is invest some time: Participate in a survey or inform yourself about new products and Sponsorpay will take care that your account will be rewarded with free Diamonds.
And here's how it works: Log-in to the "Charge Diamonds"-page, select the server you want to have your Diamonds credited to and select "free diamonds" as payment method. Then simply follow the instructions on the page. Please ensure to read the sponsor's terms and conditions carefully.