One of the most frustrating things in life is knowing you filed an important document but can't access it. This is true of both manual files and computer files. I have countless backups of data on media as far back as 5 1/4 inch floppy disks; Jazz removable hard drives; memory sticks; and Seagate gigabit backups (which I have know idea how many versions are backed up). I have all my laptops with duplicate copies of Outlook email archives; I have no organized naming of any of my old PC's (desktop or laptop). I even have my old Accenture Lotus notes archives somewhere.
Think of the gazillions (that's a technical term) of stranded data sitting out there for a future archeologist (or maybe there will be a different name for a data finder) to find. Instead of the Dead Sea Scrolls - it will be the Dead Floppy Bytes.
Maybe they will find an old blogger's data :)