Here's a personal eye opener.
I read mostly Roman Catholic blogs. This website was able to calculate the top two hundred most subscribed Roman Catholic blogs.
Out of the top ten, I read only one: Patrick Madrid's blog (#7). I've never read any of the other top ten, nor do I think I've ever heard of any of them.
Out of the top twenty, including Madrid, I read only two. The other would be Mark Shea's blog (#15).
Out of the top fifty, I read only four. The next pick up is Jimmy Akin's blog, (#42) and Catholic News Service (#43).
Then after the first fifty, I pick up another three. All in all, that's seven out of two-hundred, and even of those seven, a few I only read occasionally. I looked at the other blogs in the top ten, and frankly, they're a bit dull, at least for my taste.