User blog comment:Dopp/Technical Update: April 10, 2012/@comment-4519283-20120410214305/@comment-824313-20120410220449

It links to the blog of the user viewing the article, not the editor who added the link. So, although Special:MyBlog/Foo might work, it would be pointless, unless (for example) you were writing a tutorial and everyone was expected to have a blog post called Foo.