Pulse is a film that shocked me. First of all, I had seen the American version, so the part with the red tape being a bad omen and a sign of danger and death perturbed me. Apparently, the American version seriously misconstrued the original concept, although the same director headed both films. In the American version, the red tape was used to block the "ghosts" and to secure the characters inside rooms without leaving any room for the ghosts to come through (or at least, I thought so). In the Japanese version, the red tape was dangerous and signaled that a character was about to be "haunted" by the knowledge of what death holds. The vast differences between these two concepts seriously disturbed and bothered me, as I found the red tape to be a very important concept in both movies. I am also very bad with technology and do not understand most of it, so the thought that exchanges via internet could lead me to committing suicide were a bit haunting.
I also appreciated the fact that the film conveyed a message about humans' fears of death. I believed the ghosts to signify the knowledge of death and what it holds, and each character affected by the ghosts was overcome with the loneliness and gloom that death holds and what can lead one to want death. When watching the American version, I definitely never got the metaphorical message of "the knowledge of death" coming into play after the encounters with the ghosts.
Overall, a very good film with a very good message (except for the creepy internet part).