Some of the topics I am involved with as an AV artist include:

Networked Performance. incorporating computer networks (the internet, wireless, telephone, and others)

Augmented Reality. Which unlike virtual reality where you cut yourself off from the real world in order to immerse yourself in a computer generated virtual world Involves the overlaying of a virtual world on to the view of the real world so that you experience both at the same time

and Ubiquitous Computing which seeks to embed computers into our everyday lives in such ways as will render them invisible and allow them to be taken for granted.