The creator of the World Wide Web, Tim Berners-Lee, suggests that the Web as a whole can be designed more intelligently to be more intuitive about how to serve a user's needs. He suggests developers and authors, singly or in collaboration, can use self-descriptions or similar techniques so that new context-aware programs can better classify the information that might be relevant to a user. Web 3.0 will involve the publishing of web resources in languages intended for data (such as XML, RDF, OWL and XHTML) to supplement them with metadata that will allow software to analyze, classify and deliver content for more personal relevance. The Semantic Annotations for Web Services group at W3C is defining the specifications for the Web 3.0.