[...] Harold Jarche writes about the importance of making your learning process publicly visible, for example through blogging, participating in online networks, and building up a trusted – and trusting – base of followers on Twitter. He says: ‘It’s not just an advantage to belong to diverse professional networks, but… it is now a significant disadvantage to not actively participate in social learning networks.’ This explicit linking of social networking with professional development is a thread running through almost all of the responses to the Big Question. …