You are also not presented with a form to opt-in in Denmark, and you have to request a form in order to opt-in.<p>So the chart is exactly as is stated.<p>In opt-in countries you have to contact authorities to opt-in and in opt-out countries you have to contact authorities to opt-out.<p>The author has a moral position made clear early in the article, when saying that more than 99% "failed to opt-out".<p>No they didn't fail to do anything. They either chose not to, or did care enough about the subject matter to make a choice.