Web 2.0 has brought many exciting developments to the Internet, such as blogging, multimedia sharing services and social networking. However this user-generated content also raises many difficult legal issues. In this article, Dr Carlisle George and Dr Jackie Scerri look at the legal and regulatory challenges posed by Web 2.0. They look at case studies and legal cases from the UK, US and other countries in order to illustrate the issues which have arisen to date, and suggest some possible solutions. JILT 2007(2)