User blog comment:Abigail's Corner/Show/@comment-36627132-20181221112249/@comment-25428589-20181221115500

I don't think anything in the blog rules indicates they must be related.

e.g: Blogs are "A way to ask something of the community, such as opinions on a story idea, how someone feels about an issue that may or may not relate to the site's content, or for asking people to vote on a matter."