You might also be interested in Manuel Castells' work. The Origins of the Internet . Designing Open Hypermedia Systems is intended for hypermedia system designers more than it is for writing or even technical writing teachers. Web-based system design, however, is itself a form of writing. Rearticulating Hypertext Writing for an examination of the relationship between system design and writing.
Computers are more than tools.
They shape our culture and learning institution. Passions, Pedagogies, and 21st Century Technologies , edited by Gail Hawisher and Cynthia Selfe, is an excellent series of essays which explore notions of literacy, feminist concerns, and our postmodern selves in our electonic world. The Culture and Politics of Cyberspace and the Internet . The Culture and Politics of Cyberspace and the Internet explores power and agency online and offline. Jordan often relies on theorists like Focault to prove his points.