danah boyd

identity, youth culture, online communities, social media
http://www.danah.org/
http://www.zephoria.org/thoughts/

Henry Jenkins

media convergence, fan culture, media and democracy
http://web.mit.edu/cms/People/henry3/
http://www.henryjenkins.org/

Lawrence Lessig

intellectual property, copyright, the commons
http://www.lessig.org/

Howard Rheingold

sociology of online communities, mobile computing
http://www.rheingold.com/
http://www.smartmobs.com/

Sherry Turkle

identity and technology, psychology, computer addiction
http://www.mit.edu/~sturkle/

Seth Godin

marketing, business, entrepreneurship
http://sethgodin.typepad.com/