Excellent thread and a topic that Don Higgins devotes a lot of time to in his book.I definitely believe it to be true.How often have you heard it said that the first time a stand is hunted it is the most productive and becomes decreasingly so as the number of times it is hunted it increases.I do believe that with really paying attention to the wind and doing what you can do decrease the odors you bring in to the woods with you that you can keep a stand fresher.In area's like David was describing deer are much more used to people and will tolerate a lot more than they would in remote area's.
I have been very conscious about these things over the last several years and am sure have had greater success as a result of it.