Michael Clyne is an Honorary Professorial Fellow in the School of Languages and Linguistics at the University of Melbourne. Catrin Norrby is an Associate Professor and Reader in Swedish in the School of Languages and Linguistics at the University of Melbourne. Jane Warren is an Honorary Fellow in the School of Languages and Linguistics at the University of Melbourne.

• 1. Introduction; 2. Multiple approaches for a complex issue; 3. Contextualising address choice; 4. Institutions, domains and medium; 5. National variation; 6. Conclusions.

Michael Clyne is an Honorary Professorial Fellow in the School of Languages and Linguistics at the University of Melbourne. Catrin Norrby is an Associate Professor and Reader in Swedish in the School of Languages and Linguistics at the University of Melbourne. Jane Warren is an Honorary Fellow in the School of Languages and Linguistics at the University of Melbourne.

• 1. Introduction; 2. Multiple approaches for a complex issue; 3. Contextualising address choice; 4. Institutions, domains and medium; 5. National variation; 6. Conclusions.

Michael Clyne is an Honorary Professorial Fellow in the School of Languages and Linguistics at the University of Melbourne. Catrin Norrby is an Associate Professor and Reader in Swedish in the School of Languages and Linguistics at the University of Melbourne. Jane Warren is an Honorary Fellow in the School of Languages and Linguistics at the University of Melbourne.

• 1. Introduction; 2. Multiple approaches for a complex issue; 3. Contextualising address choice; 4. Institutions, domains and medium; 5. National variation; 6. Conclusions.