In the authors' words, ‘Language educators are the crux’ (p. xi) and they need to upgrade their skillset to include knowledge on how to put new technologies to good pedagogical use. The result is a succession of real-life online TeachereStudent dialogues together with accompanying analysis, with page after page of helpful illustrations provided by computer screenshots. As you work your way through them, you encounter a wide assortment of languages being taught and this adds a degree of both breadth and weight to the authors' claims, in addition to being a rather nice exotic touch.We are, in fact, informed that there are indeed seventy more examples of instructional conversations than in the first edition and this is a statistic worth pausing over, because it gives a sense of just how replete the book is with concrete cases.