Ask HN: What goes into a great startup blog? What do you like to read?

Recently we started a blog for our company, to share our experiences as we go through Techstars NYC.

It got me wondering-- what is worth writing about in a startup blog, considering every startup seems to have one? What would you like to read? What is missing from other startup blogs?

Would love to hear any thoughts.

(Specifcally for us, our audience is node.js developers who would be interested in a dev platform and next gen PaaS. Here is our first post: https://bitly.com/lsq-b1)