I can tell you my own experience.
I made a vision board back in Aug-Sept 2007.
I had it on my desk right next to my computer screen which with my online supplement business I am on the computer all day. I would glance over and checkit out fairly regular. Then I had taken it down and placed it right behind my steam sauna here in my office about a month ago. I noticed it about 2 weeks ago and decided to pick it up and look it over. To my surprise 4 of thethings on it had come to life or was in the process of it.
SO I added more things to my board and placed it back where it was...LOL
It was so cool and amazing when I realized this..
Blessings, raider