This master thesis deals with the topic of Web 2.0 and the new possibilities of knowledge transfer, that go along with it. Based on general aspects and features of the internet, Web 2.0 applications are investigated on their technical, social and primarily didactical features. The role of the user as a producer of contents in weblogs or wikis plays a decisive role. The virtual 3D platform "Research Exhibition and Experiece Landscape", that was designed for this master thesis and the FWF project L363, provides the basis for further examinations. The principal goal is to develop an instrument to support the complex interaction patterns of providers and consumers in an e-Tourism setting. Every user has the possibility to collect informations about the project and to take part in the development of the platform. The following section is about the possibilities of virtual exhibitions and their influence on conventional museums. Four different examples of museums from the 3D world Second Life show the similarities and differences of knowledge transfer in a virtual enviroment.