Several points come to mind Gill
1. Yes, this is an answer site so why come on it if not looking for answers.
2. Having come on it and seen headings implying Rainbow Quiz, Heage, etc. why click on said heading to view what is being asked
3. Just because others ask for hints/clues/answers, does not preclude you from doing the quiz 100% on your own and gaining the pleasure and satisfaction from getting the right answers
4. Your talk of it becoming a prize draw, implies that the prize is the only reason for doing the quiz. To me it's the working out of an answer that's been bugging me and when the penny drops and you have that 'eureka' moment, that is reward enough.