Hello! I bumped with a website that must have one of those adsense premium type ads: http://www.thefreedictionary.com/provoked Look at how far the "Ads by Gooooogle" part is away from the ads.
It is normal. Premium Publisher. This german site has the same: (above in the middle) http://www.funpic.de/webhosting_logged_out.php
For USA, England: If your site receives more than 5 million search queries or 20 million content page views a month, you may qualify for AdSense premium service. For Germany and some other European: 10 million page views. For your Land you must inform yourself: http://services.google.com/ads_inquiry/ct?hl=de (not "de")
simply you need 20million or more pageviews per month and then you can apply. the google_kw is to set your own keywords, it's really handy for the premium publishers.