I read a couple of blogs that are written by authors that I just happened upon.
But for the most part, no.
I only look for author blogs when I'm doing a review so I can add a link. But, more often than not, I can really only find a website. It's rare that I find an actual blog.
If you're interested in a fun author website, though, check out jasperfforde.com. It's a lot of fun!