Kaletka, ChristophPelka, Bastian2017-03-162017-03-162011Kaletka, C. and Pelka, B. (2011) 'Web 2.0 revisitcd: user-generated content as a social innovation', Int. J. Innovation and Sustainable Development, Vol. 5, Nos. 2/3, pp.264-275.1740-8822; 1740-8830http://hdl.handle.net/2003/3586310.17877/DE290R-17887This paper raises the question whether Web 2.0 can be seen as a technological or a social innovation and which interdependencies exist between these two innovative aspects of the phenomenon. For that purpose, the definition of Web 2.0 as a tag cloud (for example given in Wikipedia) or as a difference in comparison to a "Web 1.0" is revisited, challenged and discarded. In following steps, the paper argues that the core innovation of Web 2.0 is the communication of ´user-generated content´ as a new social routine. The main enabling factors for Web 2.0 utilisation as a social routine are identified as easy-to-use software and broadly spread internet access. So while technology is seen as a ´catalyst´ of the phenomenon, the innovation itself (user-generated content) is considered a social one.enWeb 2.0social Innovationsocial webuser-generated contentWikiblogcommunity300article (journal)SozialinnovationWorld Wide Web 2.0