Why cant on the community thing there be a section for each and every user to have their own forum blog. People could comment,rate and favourite blogs they like and stuff.
Well in AGv3, they have something kind of related to this.
If you are in the Beta, you can see that there's like a news feed that you can update on your 'Dashboard' (profile). I'm not sure if people can rate, but I'm almost positive they can comment and 'like'.
Armor Games isn't going to host 'blogs' for users. As P.Oak said, though, the AG3 'status update' and activity stream setups will allow you to write things on your own profile that people can comment on. Once we build a Reputation system, they can 'like' things as well. But we'll probably cap those messages at a certain length though, because, as I said, we're not aiming to be a 'blog'