Blogged.com just added a Math Blog Directory. I never heard of blogged.com before.
Anyway, there are 26 Math blogs listed as of this writing although not every single one is a Math blog. There are even some Math blogs I hadn't heard of that I'm going to check out.
Will it make those of us who got listed rich and famous? I doubt it. But, hey, a link is a good thing and maybe it will bring visitors.
And, if you didn't get listed go and submit your blog.