Sorry if I've not been giving you what you need emf. If you can just indicate that you need a hint I will try to oblige, if not and if I have it, I will (as I have in the past) give you an answer.
To answer your question more specifically Chris, I usually answer where I can unless there is a request for hint only. Personally I find it quite difficult to give appropriate further clues without giving the game away.
Personally speaking, I usually want the answer rather than clue as by the time I consult this forum I am well and truly fed up with the clue! And can I say andyc, how much I appreciate your contributions, you can always be relied on!