When do people greet each other on WhatsApp How do people start chats on Tinder How are emotions displayed in video-mediated workplace interaction How do people converse with a social robot This volume offers a state-of-the-art collection of articles dealing with digital interaction in different settings - mobile messaging, social media, video conferencing, and human-computer interaction. It shows that while there are different applications and platforms that employ both written and spoken forms of interaction, the method of Conversation Analysis is a powerful tool for revealing the systematicity of varying linguistic and multimodal resources and practices specific to each context and platform. The volume offers in-depth analyses of interactional practices in different platforms the languages covered by the chapters include Finnish, Dutch, German, and Hebrew. In addition, the volume offers a comprehensive introduction to the central concepts of Conversation Analysis and their applicabi