Greets,
Well I have often wondered about this subject, I can see an advantage to feeding in the manner that Cardeer and acouple others have said they do. So long as A: they are willing to continue every year, unless the deer become tame to people. and B: The Deer are not getting too used to human contact, I:E the pics you are sending of people hand feeding them. My VERY uneducated opinion would be in the case that that begins to happen, that either the feeders get tapered off gradually, giving the deer time to reaclimate to foraging, and / or some sort of operation is started to keep the deer afraid of humans. ( some thing legal and humane but that would make the deer afraid of human contact. )

Just my uneducated opinion!
Terry