David Crystal is one of the world's foremost authorities on language, and as editor of the Cambridge Encyclopedia database has used the Internet for research purposes from its earliest manifestations. His work for the technology company AND Classification Data Limited has involved him in the development of an information classification system with several Internet applications and he has extensive professional experience of Web issues. Professor Crystal is author of the hugely successful Cambridge Encyclopedia of Language (1987; Second Edition 1997), Cambridge Encyclopedia of the English Language (1995), English as a Global Language (1997), and Language Death (2000). An internationally renowned writer, journal editor, lecturer and broadcaster, he received an OBE in 1995 for his services to the study and teaching of language. His edited books include The Cambridge Encyclopedia (1990; Second Edition 1994; Third Edition 1997; Fourth Edition 2000), The Cambridge Paperback Encyclopedia (1993; Second Edition 1995; Third Edition 1999), The Cambridge Biographical Encyclopedia (1994; Second Edition 1997) and The Cambridge Factfinder (1994; Second Edition 1997; Third Edition 1998; Fourth Edition 2000).