To decline, only one click is required: Simply click the decline button in the review form.
If a page with a red "Review Request Declined" appears, then this response has been registered. No further action is necesssary.
You may want to suggest additional reviewers (for which we award 2 Karma points per reviewer, up to 4 points), or enter your review interests to receive more targeted review requests in the future, but this is optional.
If you change your mind and want to review the article, click the red "Undo" button, and then accept the review request. We hope that you change your mind or accept future review requests - after all, you will up to 100 Karma points ($100) for that! (see Karma Credits - What are they and how to collect them?)