I found this on the FAQ page of the Dervaes website http://urbanhomestead.org/faq#n181
We are extremely supportive of members of our online communities; fans of our websites and others who help to spread information regarding sustainable living.
If you are a Urban Homestead(er) blogger and are simply documenting your life or sharing your journey or information, sure! In fact, we encourage it.
However, we must also guard against the unauthorized use or exploitation of our intellectual property for commercial gain. From the beginning, our work published online and in other media has been copyrighted and trademarked. By protecting intellectual property we are better able to ensure that our work is presented accurately and contributes to our sustainable living projects and educational initiatives.
If you want to label a for-profit endeavor or business with the term, we ask that you contact us first.
Thank you in advance for respecting our legally protected intellectual property rights. If you have been supportive of our ten-year online work in the past, we appreciate very much your continued support.
If you have any questions regarding the use of Dervaes materials or trademarks, please contact us at (626) 795-8400. We would be glad to provide you with more details.