This is one of those issues that is evolving very quickly. As of this moment, my advice is that you should consider listing your blog in applications, as long as it meets a few standards.
First off, consider your blog from various angles. Take appearance: Does it look decent visually? It doesn’t have to be anything fancy—the world of academia continues to be a world of very bare-bones Internet style. But it does have to communicate a certain level of professionalism and orderliness consistent with the rest of your job market materials. You can’t have misspellings or glaring typos, for example, whereas you must have appropriate visuals, fonts, and a writing style that communicate a scholarly persona.
Second, content: blog content does not have to be intense, long, heavily-footnoted scholarly research! It can be short, topical, impressionistic, and footnote-free. However, the content does have to be consistent with your general persona as a scholar. Does it relate to your research or discipline in some meaningful way? If your cat makes frequent appearances, think twice. <Read more.>