You have a good point, and the critisism is not so misplaced. I have left you hanging a time, or two.

There are various levels of interest in shaders and it is hard to meet all of them. There are those that just want working code and seek technical support for them. And then those that want a full-on "from the ground up" tutorial.

I agree, there needs to be a good tutorial/demo project that can be used as a learning tool.

What would you(anybody) want to see in this type of tutorial?? Interest and suggestions might make it a viable thing to do.