I'm very interested in the concept of the the commons and the gift economy. Despite the recent republication of Lewis Hyde's The Gift - a sort of cultural history of social attitudes to gifts and creativity, and of creativity as a form of gift giving - there has been very little written about it. Hyde describes his interests as 'the public life of the imagination'.
In the last 10 years, there has been a little more interest in the gift economy. I first became aware of it through George Bataille's The Accursed Share, and the advent of open source software development (and especially the success of Linux) and participatory media (and especially the popularity of blogging, vblogging and podcasting) has kept the subject current.