Ask HN: How can I encourage participation?

Comments can be the most important part of a blog. Recently, I started my own blog at http://recoding.blogspot.com mainly because Jeff Atwood and Steve Yegge told me to. It's been a great experience and I've learned a lot about writing and coding. Problem is, I feel that Recoding isn't all it could be. As of now, I've got 26 posts, dozens of readers every day and only two comments. How can I encourage readers to participate, rather than just view?