Language in the digital world -- Ten Reasons Why Studying the Online World is Crucial for Understanding Language -- Acting in a Textually-Mediated Social World -- Hello! Bonjour! Ciao! Hola! Guten Tag!: Deploying Linguistic Resources Online -- Taking up the Affordances of Multiple Languages -- "This is Me": Writing the Self Online -- Stance-taking through Language and Image -- "My English is so poor": Talking about Language Online -- Everyday Learning Online -- Language Online as New Vernacular Practices -- Language Online and Education -- Researching Language Online -- Flows of Language Online and Offline.