Quote:

...but I believe that most users will have problems understanding how the code behind the shaders works...



Maybe then just a showcase for any cool new shaders, explain how to implement ie "insert here" and highlight areas where users can make simple changes. "if you want to increase the transparency you can edit the following line to any value between 0-100..."

Can be as simple as

Shader Spotlight

Fire Shader
by Som EBody

Brief description of what it does

Link to code on Wiki
Optional more info (link to thread in Shader forum)

How to add this shader (this can point to a standard 'how to add a shader' page).

Tweaks (just highlight lines you might want to play with).