In December 2010, the European Parliament will vote on a Report of Philippe Juvin (EPP, FR) on behavioural advertisement. The Report passed the Internal Market Committee on 8 November 2010 and raises concern over “the routine use of behavioural advertising and the development of intrusive advertising practices”. Juvin suggests to introduce an obligation to mark advertising based on behavioural data and to provide links with further information about the underlying techniques. The criticism expressed by the Report is in line with an Opinion (2/2010) passed by the European working group of data protection authorities on 22 June 2010. The so-called Article 29 Data Protection Working Party claims that privacy rules apply to the use of cookies and the storage of IP address data. The European Commission might take these views into account in the context of the ongoing reform initiative on European privacy law.