A slightly edited version is published in the Canadian Journal of Communication Vol.24, No.2. Even though it's more than a year old now, it is still an useful introduction to the topic and to some ways of developing a context for a critical analysis. Just remember if you read the FV chapter, they're out of this business now. A general introduction to Bruno Latour et al. A more McLuhanesque interest of mine are media-related properties of electronic spaces.
Media have biases which make certain things easier and others more difficult.
They exercise a profound impact on what is being communicated through them. Of course they don't determine but definitely shape the content. They relegate certain things to the background, while drawing others to the fore. A good place to look at the media-specific aspects of electronic spaces are the financial markets. Nowhere have new possibilities been exploited so radically.