Originally Posted by Totem Rex

The software goes on sleep mode as soon as you open a window big enough to cover most of the wallpaper. This way you can work with 100% of your PC's power and when you close some windows, the dancing in the wallpaper resumes.
To answer your question, we play a full screen video, with transparency and add it to your wallpaper, so yes, it does crunch power (about 50% on my 1.2Mhz laptop). But surfers don't care coz you can't take your eyes off it once it's there ;)