It was released under these terms:

“The original template was released as open source and free to use for any purpose as long as the proper credits are given to the original author. This theme is released under the same conditions so please respect this and leave the credits in place to Andreas and myself as we have both put a lot of time and effort into the design and the theme. Other than that you may change the included files as you want.

Go figure, WordPress.com removed my credit link from the footer. You coud say I support WordPress even though WordPress don’t support me.

Check out the discussion here