that's because nobody use the blog, if they do you will end up having the same problem, a forum is a more robust tool than a blog, with a forum you can do all the things you do in a blog and much more but not viceversa
The forum has the advantage that it's not designed for only one person and to be able to do comments, the blogs are not designed for that, they are meant to be used only by 1 person and for example in a blog even if someone comments on a post/blog (again they are not designed for this, this was a feature added much later (and even some blogs still dont have it, that's why you need to use a separate account google+, disqus, and now twitter or facebook) it will still be at the end of the list because it doesn't follow a comment update system rather a system of "the newest blog will be always on top." So your post (if the users of fuwa give the blog a more intense usage)it would probably be even "more forgotten" than it is now, because If I comment on your post now I can bring it back to the top list and somebody will see it eventually.
The forum requires a ton more resource to run, because the queries to the db are more because of all the functions it has, it needs to keep track of everything thus a more intense usage of the server, that's the only con I can see in a forum vs a blog.
If fuwa was just a blog they could probably host it in a cheaper server.
ps sorry for the really bad english xD but im really sleepy and it's hard to explain that kind of technical things