This is not an endorsement (or not) for blogs that rely on JS, but apparently 98.6% of screenreader users have javascript enabled.[0]
Also, I'm surprised I got downvoted for saying that we should be considering the disabled when making decisions on how to structure a blog. I know accessibility isn't _cool_ but it's the right thing to do, especially for a text-based site, like a blog.
(PS: mendelk, I'm not accusing you of downvoting me)