Though the comments on global areas were greater than those on local areas, the qualified comments (revision-oriented comments) were not guaranteed greater. The total revisions made during blog-based peer response were greater than the total revision-oriented comments delivered by peers. Revisions at lower levels such as word or phrase needed less help from peers, whereas those at higher levels such as sentence or paragraph needed more help from peers. The study brings lights for instructors who expect to apply the blog to their writing classrooms.