[Air-L] Literature on disagreements and opposing views in collaborative authoring systems

Dear colleagues, I'm looking for research about the scope and character of exchanges between opposing views in Wikipedia or other collaborative authoring systems online. Relevant studies can analyze "edit wars" and disagreements, discussions in talk pages, visualizations of controversies, surveys of contributors' backgrounds and views… Many thanks, Azi Lev-On. =-=-=-=-=-=-=-= Dr. Azi Lev-On Richard & Rhoda Goldman Visiting Israeli Professor, Institute for Research in the Social Sciences, Stanford University, 2009-2010 Head of New Media Track, School of Communication, Ariel University Center, Ariel, Israel (on leave) www.azilevon.com