Well ... yes and no ... It really depends on the question.
If the question is valid then you would want it in the post (for example jose suggestions on the formulae I posted, or when someone askhenry more info ... )
However I agree that we should delete any posts that simply ask for a system another formula or anything like that ...
You will have to judge wether the question would be asked by other people reading the formula or if someone simply posted in the wrong place :D
My Site