An interesting article: Social Enterprise Architecture that describes the idea of using the Social Technologies to improve the engagement and interactions of the business and IT, and the Enterprise Architecture organization to provide more structure and semantics to the interactions and collaboration tools in the enterprise. There is a tool called Semantic Center that was written in Javaand ADF that makes the concept a reality. It is built with WebCenter and Sharepoint integration capabilities. That solution has inference, you can get answers to questions like what projects are affecting what pieces of the infrastructure in the next 3 months? It is a very neat solution! Worth looking at it.