Human beings are evolved as learners and communicators in groups. Social animals with consciousness, this is what we do. We use everything that can be used to communicate, which despite its many drawbacks, centralized "social networking" (which is really the Web with a few additional writing tools and complete integrated surveillance) absolutely can.

One of the things human beings are most likely to be communicating about is death. One of the most likely forms of communication among human beings is communication with the dead. This is literally impossible, but doing it allows us to dissociate the fact that we die, which would otherwise cause us all to go crazy immediately. You are observing the behavior, which is certainly correctly described if not very clearly analyzed. Clear analysis is hard for you because you are writing about a death of which you were socially aware. That requires you to undertake the effort to accept the reality of someone's death without accepting the reality of death too much. This process, called "mourning," is psychically very fraught.

So what is the subject: Your experience, the meaning of your experience, and perhaps something else? The draft's difficulty is that it is too close to the subject, which is the choice you made in deciding to write about it here, which was not like other possible forms of mourning, including writing on the Facebook wall.