I think I've hit the sweet spot in thinking up THE WORLD'S MOST MALICIOUS VIRUS and now I've just to figure out how to get it in implementation. Yay.
The idea? Simply one that makes your mouse's pointer icon jump a few pixels in a randomised direction - imagine how peeved the user will be when he fails to click any buttons~! Heh heh *in a diabolical tone*
How did I think of this ingenious idea? My mouse pulled the stunt on me quite a few times. Hmm.. time to get the mouse that I've been wanting to get since centuries ago.