At the same time though there’s the question of motivation for writing. For whom does the writer write? I imagine this will be different for every person; some will write for an audience, some will write for themselves, and for others still it may be a combination of elements. Some will write for profit, some for pleasure; some for fame, some for the sheer joy of it.

For that matter, even in literature there is debate about what is good writing and what isn’t. I don’t profess to be an expert there, but I would imagine that the saying “one man’s trash is anothers treasure” would apply just as much to this sphere of activity as other aspects of life.

So I think all of these aspects combine to create a fairly complex landscape in which perspective determines worth and to a large degree value as well. If the motives that drive a write to share their creations with the public via a blog are sole self-expressive or introspective and not to speak to a specific audience, then it seems to me that the works have value in and of themselves regardless of the perspectives of others.

Insight does not usually get lost these days — it’s all preserved on a server somewhere — but it can easily get buried. Give me a hundred poorly thought-out posts to read and I might not even notice that one of them has a gem of an idea.
The web these days is a noisy environment; let’s not make it noisier.

In a sense, this is all about not wasting reader’s lives. Computer storage may be (essentially) infinite, but the abilities of your readers to read and understand are a finite resource. A ill thought-out blog posting is like litter on the sidewalk. Individually unimportant, but if it starts collecting in piles, the city suffers.