Hence it is not possible to draw conclusions on the identity of the users and personal rights remain protected to the full extent. You will find a copy of the approval certificate regarding the legitimacy of the ADTELLIGENCE system in respect of data privacy under the following link (in German) :

Dr. Carsten Ulbricht is an advocate at the law firm Diem&Partner in Stuttgart. He gives legal advises to various companies and start-ups in the area of Web 2.0. His focus is especially on the law of the internet, copyright, trademark rights, competition law and data privacy laws as well as on the issuing of general terms and conditions, respectively on terms of use, and legal check of legitimacy of business models. He also authors following blog: www.rechtzweinull.de