It seems like such an inordinately vast amount of information. Whose voice matters when virtually everyone has one on the internet? What predictions can you make about how people will devise their views on our time? What warnings would you give future historians who are researching us?
There was a similar thread some time ago. Somewhere down in the thread, I speculated a bit about historical research with the Facebook database.
You may be interested in the 'Historians in the digital age' section of the Popular Questions pages - as found in the sidebar.