Fondazione Rinascimento Digitale is delighted to announce the 3rd edition of the "CULTURAL HERITAGE on line- Trusted Digital Repositories & Trusted Professionals" Conference that will be held on 11-12 December 2012 in Florence, with a rich program of specialised events and tutorials. This year the focus is on the competences and skills necessary to manage trusted digital repositories. The Conference includes a call for contribution aimed at selecting concrete examples of trusted digital repository initiatives. Accepted contributions will be published in the Conference 2012 proceedings