Domain World Card for free?

united-domains is currently making a nice online marketing campaign. They will give you a free Domain-Weltkarte (Domain World Card), if you write something about it (like I'm currently doing, as I want to have such a thing). All you have to do: write about it and send the link of your article to an mail-address. You can find out more here. It seem for me, as this is a good advertisement, as I've found this campaign on another blog :) And now, I'll have to write a mail :)