"The Pillow Book" written by a Japanese woman, Sei Shonagon, in the 10th century was posted as a blog.

Some entries:

My favorite birds
Things that really pissed me off
Things I think are elegant

This is from "Huh, men!" entry:

I will never understand men. Their emotions are just really strange, and I just can't work out why they behave the way they do.
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There is nothing new under the Sun...