Abstract
This paper examines keeping behavior of personal information in different forms by reviewing and analyzing previous empirical studies on keeping personal information. By adopting user-centered and cross-form perspectives, similar behaviors as well as unique behaviors in keeping different forms of personal information are reviewed and comparatively analyzed. The identification of similarities and differences of keeping behaviors among different forms of personal information widens our understanding of personal information management (PIM). The results of this study have practical implication for human computer interaction (HCI) studies in designing tools, devices and interfaces that are more effective in supporting individuals' PIM.