The document summarizes David Crystal's 2001 book "Language and the Internet". It discusses how Crystal explores the new "third medium" of online communication. He coins the term "Netspeak" to describe the hybrid language used for chatting, messaging, and online forums. The summary analyzes Crystal's examination of different internet genres and his descriptive approach to the features of Netspeak. It also notes that while Crystal documents this new language, he leaves questions about its effectiveness and impacts open for further research.