I spent some time today cleaning up links and updating pages at this site.
The biggest change is to the Research page. The most comprehensive list of research papers and conference presentations is now at my department profile page. My Research page now includes just a list of key papers along with abstracts and links to full text versions.
The newest addition to the list is:
Samer Faraj and Steven L. Johnson (Forthcoming). Network Exchange Patterns in Online Communities. Organization Science.