The Bonn Sustainability Portal would like to know your opinion on our website and services. We would very much appreciate if you could take 5 minutes to answer our user survey. This way we would like to improve the quality of our portal. Answers can be given in English or German. Please follow this link: http://www.surveymonkey.com/s/9Q8ND9HThe Bonn Sustainability Portal would like to know your opinion on our website and services. We would very much appreciate if you could take 5 minutes to answer our user survey. This way we would like to improve the quality of our portal. Answers can be given in English or German. Please follow this link: http://www.surveymonkey.com/s/9Q8ND9H