The Web can provide another means of observing readers, though at a distance. Both Mark Amerika and Judy Malloy have found it instructive to analyze the page access logs of their hypertext fiction. Amerika cautions that it is prohibitively time consuming to fully reconstruct each reader's behavior from this data, though. It often leads to revisions that give readers more flexibility. Reader responses have prompted both Larsen and Luesebrink to add more navigational aids to their work.
Testing can also be necessary for multimedia synchronization.
Particularly interesting are the far-reaching structural revisions that can emerge from observing readings unfold in unexpected ways on the large scale. The authors revised the link structure to allow easier access to other parts of the work. Luesebrink had designed Califia assuming that readings would center around the most prominent of the story's three narrators. While women usually stuck with this female character, temporarily digressing from her path to other material, Luesebrink unexpectedly found that men tended to follow the story's male narrator. This led her to flesh out the male perspective.