Just wanted to announce my open source textures site.
I’ve noticed that there is not many resources for open source compatible textures out there, I decided to solve that. At least I had a lot of trouble, when I started learning modeling with blender, since free open source material for textures was very rare, so I started creating my own archive. I decided to share my work, so there is an open source equivalent to the commercial texture sites, for those who prefer open source. All content on my site is licensed CC0 (Public Domain) so it is free for any use.
You can find the textures at: http://www.duion.com/art/main
Click on the categories on the left for the pictures.
If you also want to contribute something, you can contact me, then we will see, but you should have some experience, since I want to keep a fairly high quality throughout the site, you also have to agree with the license, since there is no other choice.
Feedback and requests are welcome.