There is a lot of confusion from bloggers and old-skool print media as to how to handle the republishing of TCD strips. Many print media outlets do not understand the Creative Commons license. If you are in print media and need for me to sign a licensure waiver, please use the contact page to get started on this. If you are a blogger and have advertising on your website, you can STILL republish TCD strips on your site. Daily if you want, I do ask that you use your own bandwidth for this however. Here is a good link to the Creative Commons FAQ.
TCD strips are Attribution-NoDerivs 3.0 meaning you can republish the work as is commercially or non-commercially.
A special note for Wikipedia:
Before the Great Recession set in, I had been interviewed for it a few times at comic conventions but nothing ever came of it that I know of. That said, the interviewers has long since moved on and I am miserable at setting up Wiki pages. I am unsure who the current maintainer is (if there is one). But I wanted to make clear to the Wikipedians about the use of two graphics in use on Wikipedia.org.
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 License.
This work is licensed under the Creative Commons Attribution 2.5 Generic license.
I really fault copyright trolls for all the upheaval. I have had many websites I have created graphics for contact me in 2011 to put in writing that they have my permission to use work I did for them and in many cases THEY paid for. Evidently an invoice is no longer good enough to show a right to use an image these days.
I can only imagine the hoops someone like Wikipedia has to go through to keep that valuable resource running smoothly.