I've worried about this. While we can sift through hundred-year-old photos of our great grandparents, what will our great grandchildren sift through a hundred years from now? We generate more photos and written word by orders of magnitude, but often this data gets lost as we fail to back up data, social networks shut down, or we simply no longer have computers or software designed to view antiquated data. I guess what scares me is that our digital heritage is so easy to wipe out or at the very least, misplace.