The incipit of a semi-tongue-in-cheek post at Wired:

While blogging has only reached prominence in the last few years, it was actually invented by the ancient Romans who built a majestic blog in 200 BC from marble, granite and links they stole from the Greeks.

I'm sure if we looked into it, we'd probably find it was something Alexander the Great began in India, typing with his left hand, of course, commenting on his lifestyle and the swell bananas he was bringing back to Aristotle.