Moz.com Traffic Data Revealed

Those pie charts are basically useless.

They might be better represented as a tag cloud[1], with the most popular keywords given the most prominence.

[1]: http://en.wikipedia.org/wiki/Tag_cloud

Data goes all the way back to 2009 and is limited to SEOmoz's blog section alone as I couldn't extract the remaining.

Paints a rather interesting picture if you look into their rebrand period etc.