Cathy Marshall Microsoft Avoiding a Personal Digital Dark Ages: toward an adaptive service for personal archiving Most of us engage in magical thinking when it comes to the long term fate of our personal digital belongings. This magical thinking may manifest itself in several ways: technological optimism ("I know there'll be a solution when I want to look at those files again"), radical ephemeralism ("It's like a fire: you just have to move on"), or simply a gap between principles and practice ("I know I should move my files off of those zip disks, but I'm real busy right now"). Last year, some colleagues and I conducted a field study to understand the current state of personal digital archiving in practice. We sought to identify archiving challenges stemming not only from emergent technologies, but also from the exigencies introduced by home computer use and the genres and collections of digital materials that people value. I will talk about the results of this study and go on to describe its implications for the design of a Web service model for the long-term storage and access of personally meaningful digital artifacts. In so doing, I will examine how personal archiving needs intersect with larger-scale digital archiving technologies such as institutional repositories and implementations of specific preservation strategies, policies, and practices.