indeed they are extremely helpful to those of us that have an interest in the railways - at least that has always been my experience. But there is always the scenario where out of the goodness of his heart, a member allows you to enter a facility to take a shot, the image is published for the benefit of a group like ours, then its questioned, you then say in your defence that you did in fact have permission - resulting in that member getting an earful! rotten scenario.....just saying.