http://mathblog.john-burke.net/
http://math-blog.com/
http://wildaboutmath.com/

I liked these two blogs the best. They talked about math, and everything in between. The first on is just a normal man, who loves math, that blogs about it. But the second one is about math. It tells you everything you need to know about it. I would have to say the second on is my favorite one out of all three! But the third on is amazing, because it was written by kids in New Mexico.