WordPress provides some simple stats which includes referrals, top posts, keyword searches which got your reader to your blog. This is pretty good feedback. I am always surprised to see the top 10 posts in my own blog. The reading pattern always teaches you something. There are a few lessons in there. But the most useful thing for me is what I think is important to blog about vs what readers like.
The keyword searches tell you a lot more about what people are looking for when they found you. I get some ideas from these for my posts. Thank you, WordPress, for making it so easy to track.