Daniel Downes 
Interactive Realism [PDF ebook] 
The Poetics of Cyberspace

Distinguishing between the Internet, a communication system, and cyberspace, an environment for human exchange, the author provides a framework for exploring the metaphors and images used in cyberspace to represent and model social reality. He clarifies how these symbolic interactions are linked to the technologies used to create, store, and transmit them and to their social context.