So, I've been blogging for well over ten years now (but mostly the "readers" are myself and, I would guess given the consistent 30-40 views per post, webcrawlers), but I was blogging at UM before the earliest posts listed here (2007), which are re-posted UM posts IIRC.
Which made me think about how ephemeral this all is, although I might have a folder with the UMich blog material in it.
Relatedly, I've been thinking about digital photos, and what is Facebook, Instagram, and Tumblr, for instance, it's all ephemeral. Someone a while ago pointed out how, in terms of records and photographs, we are in a terrible period, as none of it will be saved for posterity. I'm debating taking an afternoon and ordering up some print books of my photos, but am not even sure what I have anymore. I think I've lost my Belgrade trip photos, back in the days of my Canon Elf (~2003?), although I might have a CD with the photo from a friend who was on the trip as well (but neither my desktop nor laptop have a CD drive, however I have an old Macbook with a CD drive that I have saved just in case).
So, no more finding ancestors' diaries and photos.
My great-grandfather and great-grandmother made a scrapbook of their trip to England in the summer of 1914, just before WWI started. My great-grandmother's parents were German and had emigrated to the US. Oops. Being German-ish in England during WWI, not a great idea. They managed to get some money somehow and got on a boat home, but it wasn't easy. Sure, if this had been 100 years later, a blog, but would it even exist for a great-grandchild to read 100 years after the fact? Our digital world hasn't been around long enough to tell, but, given the rate of digital decay we've seen, the answer is no.