In reply to Bill Robbins.

I totally agree with you. "Commercial" link placed where it is now doesn`t really have much meaning. I guess a lot of visitors connect it to "upload your theme" part and come to conclusion that it is something for developers.

If it were in line with "featured", "popular" and "latest" then it would be obvious what "commercial" actually means. I guess this is a good reason to open a ticket on https://meta.trac.wordpress.org/ as a Theme Directory improvement suggestion.