Blogging Buddies

I am currently in the process of adding different class blogs to my blogroll on my site (mravery.edublogs.org).  We are a fourth grade class so I would ideally like to find a blogs from classes around that age (9-10).  I am hoping to add a class from each continent (excluding Antarctica of course - which I'm lucky enough to have a cousin who works there who can write in to us!)  I currently have contacted blogs in North America, Asia, and Australia.  I was hoping to find blogs from South America, Europe, and Africa.  I was wondering if anyone could help with this.  Thanks!