Bear Blog now has 2000 blogs running on the platform. You can check out the discovery feed to see what people are writing about.
Pretty much all of the traffic is coming from 2 posts that did very well on Hacker News. The rest of the traffic is coming from the virality of the product as each person's blog has "Made with Bear" at the bottom of each post.
My next goal is creating some paid features. First one is analytics, which is 80% done.