Are my posts too easy, too difficult, just about right?

At the bottom of each post I have added a "gadget" that lets people select if the post is "too easy," "good," or "too difficult." The gadget does not identify who clicked on it, just the number of clicks.

I usually post about random things I come across that I find interesting or confusing, things I would normally take note of, so I probably wouldn't change what I post about, but I could add more explanation if people find my posts too difficult to understand. As I think I have mentioned before, I really am using this blog as a kind of personal notebook.