Unfortunately, the main menu page doesn’t say which articles are publicly available (although without images) and which aren’t (what about ‘affordances’ in web design?), so I have selected the six that are:

interactions: social, authentic, and interdisciplinary
Jon Kolko

Catalyzing a perfect storm: mobile phone-based HIV-prevention behavioral interventions
Woodrow W. Winchester, III

Implications of user choice: the cultural logic of “MySpace or Facebook?”
danah boyd

On authenticity
Steve Portigal, Stokes Jones

When security gets in the way
Don Norman

The authenticity problem
John Kolko

A seventh one, by my business partner Michele Visciola, can be downloaded in a pre-publication version from this blog.