I don't know why you'd preemptively lower your expectation of a blog. I start with a high standard and move on if the blog doesn't meet it. Why shouldn't this be the norm? There are more than enough good blogs on any subject to skip the bad ones.
I agree, life's too short for tabloids unless they're really useful, like the National Enquirer if you're a Man In Black, or Techcrunch if you're a startup entrepreneur.
