A system for optimizing the manner in which a listing of files is displayed to a user. In various embodiments, the system is configured to display the files based at least in part on a number of times the user has shared the files with other users of the system. In other embodiments, the system is configured to display the files based at least in part on the number of times the user has accessed the files or the number of times users with whom the files have been shared have accessed the files. In particular embodiments, the system displays files based at least in part on an amount of time that the user has accessed the files, that any user of the system has accessed the files, or that other users with whom that user has shared the files have accessed the files.