Charles Boberg is Associate Professor in the Department of Linguistics at McGill University in Montreal, Canada. His research focuses on variation and change in North American English, particularly Canadian English and accents in film and television. He is the author of The English Language in Canada: Status, History and Comparative Analysis (2010) and a co-author of the Atlas of North American English (with William Labov and Sharon Ash, 2006). John Nerbonne worked at HP Labs and the German AI Center before becoming Professor of Digital Humanities at the University of Groningen in 1993. Nerbonne works in quantitative linguistics, using computational and statistical methods. He is a member of the Royal Netherlands Academy of Arts and Sciences, was president of the Association for Computational Linguistics in 2002, and a Humboldt prize winner in 2013. Dominic Watt is Senior Lecturer in Forensic Speech Science at the University of York, UK. His research interests are in forensic phonetics and linguistics, speech perception, sociophonetics, and language and identity studies. He is co-author of English Accents and Dialects (with Arthur Hughes and Peter Trudgill, 2012), and co-editor of Language and Identities (with Carmen Llamas, 2010) and Language, Borders and Identity (2014).