The Planet (Pattern Language Network for Web 2.0 in Learning) project aimed to develop and demonstrate an effective community-based mechanism for capturing and sharing successful practice, based on the pattern approach. A pattern describes an effective solution to a recurrent problem embedded in a specific context and is characterised by being drawn from successful practice rather than from theory. Patterns are easy and intuitive to use, so supporting transfer of practice to new contexts. However, the process of eliciting and capturing patterns from authentic practice is not trivial and is rarely an inclusive community-based activity. It is this problem that Planet has sought to address.