There was no fanfare - I just told a few friends to check it out, but the word spread like wildfire and within a day it had received 25,000 visitors!
The response was overwhelming and unexpected - not just from web designers excited to find out more about our application, but also from those eager to find out how the clever pseudo-3D background effect works (this effect is only visible as you resize the browser window).
In response to their requests, Vitamin have now published my tutorial How to recreate Silverback's Parallax. Go read it! But if you don't, feel free to join the other people who haven't read the article either, but are still leaving comments at the end of it. ;-)