I'm interested in this as well. Since only top 106 are tagged, it's possible it was done by hand? edit: nevermind, it's only showing categories for top 106 dom

I'm interested in this as well. Since only top 106 are tagged, it's possible it was done by hand? edit: nevermind, it's only showing categories for top 106 domains, but if you set the period to 1 year, you can tell that there are more tagged domains. And it's not always 106 domains.