Extending the scope of corpus-based research: new applications, new challenges is a collection of articles which highlights some of the challenges facing English Corpus Linguistics at the beginning of the 21st century and shows how these challenges are being addressed by researchers. In sections on corpus methodology, language description and foreign language learning and teaching, researchers address a broad range of topics from methodological standardization, experimental research design, tagging and parsing corpora and the value of enriched corpus annotation to web-based research, tools for analysing language on the web and language learning via an Internet Grammar. There is a broad spectrum of research encompassing grammatical and lexical analyses of different varieties of early and Modern English, bilingual code switching, learner English and theoretical and practical approaches to the 0-d spoken medium. As such, the collection offers a global, up-to-date appreciation of theoretical and practical issues which will be of value to researchers in many areas of English Linguistics.