Understanding user behavior with electronic services is now a major concern
of journal publishers, librarians, and others. Various electronic journal
log files are offering researchers and practitioners a rich data resource f
or user studies. This article reports the experience of using the log file
data to understand user behavior in the SuperJournal project, addressing me
thodological and analytical issues that may have wider relevance. The purpo
se of this article is to provide guidance for log file processing and analy
sis focusing on users, and to begin the process of standardizing analysis p
rocedures to facilitate the comparison of user behavior observed in differe
nt projects.