The realtime web isn't just another buzz term. It represents a group of technologies that have enabled engaging interactive applications to be developed. In this talk I'll discuss the realtime web and what it means to businesses and developers. I'll also cover what technologies and methods can be used to build realtime applications and the methods available for realtime server to client interaction. Finally I'll demonstrate how realtime web technologies can be used to build a fun, engaging and interactive application (ok, it's a game).