Hi I added a new large rectangle ad below the navigation and next to a big welcome message with a call to action. http://www.patientenfragen.net/en/ I would like your opinion on it please StarBuG ps: the English version is auto translated by Google so excuse the spelling
Put another 336X280 ad instead of the welcoming message, there. Put the welcoming message below the ads. You can stretch the welcoming message to the width of the page so it would not take much height. What I am trying to say, let the ads be the first thing the people see there when they visit your site.
One more thing, use text ads instead of image ads or link units. Text ads is what will bring you most of the profit in my opinion.