Andrea Goethals et al. have published "Facing the Challenge of Web Archives Preservation Collaboratively: The Role and Work of the IIPC Preservation Working Group" in D-Lib Magazine.
Here's an excerpt:
Accessing the web has become part of our everyday lives. Web archiving is performed by libraries, archives, companies and other organizations around the world. Many of these web archives are represented in the International Internet Preservation Consortium (IIPC) . This article documents goals and activities of the IIPC Preservation Working Group (PWG), such as a survey about the current state of preservation in member web archives and a number of collaborative projects which the Preservation Working Group is developing. These resources are designed to help address the preservation and long-term access to the web by sharing ideas and experiences, and by building up databases of information for support of preservation strategies and actions.