This concept of “thinking writing” and blogging isn’t one I’ve seen formally articulated elsewhere, but jill/txt discusses it in a recent entry:

Edison’s notebooks were cited as an example of “thinking writing” (perhaps there’s a different word commonly used in English? the Norwegain is tenkeskriving), which is experimental, exploratory and usually just for yourself. Here the writing process is important because that’s where you learn. Presentation writing is the kind of writing where your main goal is to communicate something you’ve already learnt to other people.

Blogging, she argues, borrows from each: it’s a kind of textual thinking out loud, but it’s more public than the traditional notebook. It’s not a bad way to describe the way I find myself using the medium.