It gives you 4 different desktops at the click of a button. On for when
the boss is around, and three for surfing the net. I suppose you could
set one desktop up for every-day use, one for office work, one for
hobbies, and one for your porn collection activities. You get the idea. It
also gives you the ability to extend the taskbar across multiple monitors.
I think that when you click full-screen the programs running stretches
across multiple monitors too.
I loaded it long enough to find it not so useful. Also, WindowBlinds
(which I use) has multiple desktop capability built in, so Hydravision had
nothing to offer me that I already did not use. It's just more overhead
for my processor to run. I hate all the stuff that Windows runs in the
background as it is, I don't want more!
William