A year ago, thanks to a BlenderNation post about LuxRender, I realized that the external renderer Yafaray didn't feature a shader repository.
So I started one, writing my own piece of website to allow everyone to browse the repository, download some shaders and upload their own. A year after, no better initiative (actually, no other ;)) replaced my almost dying one. So I decided to give it a boost : I fixed some bugs in the website, and uploaded all the good shaders from my latest project.
So this database now has 18 shaders and several categories, and you can help it growing.
The site is hosted at Yafaray Shaders Database. Feel free to browse it, download and test any shader you want. You can also upload some worth-posting shaders, if you're proud of your Yafaray work !