Two papers that just came out:
The Limits of Networks as Models for Organizing the Social. In the journal New Media & Society, (12) 4, 603-617. Subscription required to download, but your school might have a license.
Also, the Spanish version of the e-book for the 4th Inclusiva.net Meeting: P2P Networks and Processes (Madrid, 6-10 July 2009) just came out. It contains my article Peerless: The Ethics of P2P Network Disassembly (pp. 56-66), along with many other excellent pieces. And it’s a free download!