This is a long thread, so I just read the OP.
I totally get what you are saying--it can be rather annoying.
But, for the same reason they are here asking those silly questions, they do not realize they are silly. In my life as a programmer I have met at least hundreds of people who have the "next killer app" idea and offer to let me in for a tiny slice if I'll just build it for them.
It might be more polite, respectful and effective to intervene during new-member sign-up with a statement about our ethos and some examples of what we consider contribution vs. spam.
People ignore that kind of stuff. For example, look at the big stickied post in the for beginners forum. It specifically states to check the FAQ, but it's obvious no one actually reads it before posting.
Otherwise I agree.