Kahn and Kellner:"Virtually Democratic:Online Communities and Internet Activism"

Summary
Kahn & Keller described the Internet as a "consisted terrain" in which alternatives subcultural forces and online communities are articulated in opposition to more reactionary, conservative, and dominant groups.
There are potential risks to promote terrorists' act, for example, Al Qaeda used the Internet to plan the 9/11 terrorist attacks on the United States. And the political battles between "hacktivists" and governments or corporations are occuring in the Internet.
However, the authors accepted as these situations are at least in part a positive development that opens radical possibilities for a greater range of opinion, new models of virtual and actual political communities, and novel forms of direct action.
Using information and communication technologies(ICTs), online communities such as blogs and wikis can promote democracy and social justice on local and global scales, therefore, the authors suggested two points. First, those interested in the politics and culture of the future should be on the important role of the alternative public spheres. Second, critical cultural theorists and activists have to educate students around the cultural and subcultural literacies in order to enable them to participate in the ongoing struggle inherent cultural politics.

My reaction
I agree the authors' opinion that the globalization-from-below will be increasing. For example, 10/15 was the "Blog Action Day" which newly established this year. On the day, bloggers around the world are encouraged to write post freely on a same theme like "environment".