Zuihitsu-occasional writings,random jottings, brush strokes, stray notes, journal entries "made famous in The Pillow Book"
Wikipedia's definition of zuihitsu.
This week I read The Narrow Road to the Interior Poems by Kimiko Hahn
Here is an example of Kimoko Hahn's Zuihitsu I found online.
Is blogging zuihitsu? I'm unsure because I think most bloggers write not only for themselves but to gain an audience and make money, but if you truly use your blog as a place to randomly jot down thoughts I would guess that it would be comparable or similar to this Japanese style of writing.
Thinking about random thoughts,
The Writing Nag