While this is not strickly P2P related spyware it is worth a read as an educational article on the subject. This makes BDE little episode look like childs play.
http://www.salon.com/tech/feature/20...e/index.html?x
This stuff takes 49 steps to remove it from an infected computer.
Here is a typical quote: Susan Henrichsen, deputy attorney general for the state of California, declined to comment on specifics of the IntelliTech situation. But she noted that downloading software onto someone's computer without permission is tantamount to hacking.
I would submit that even if you hide the declaration to get permission at the bottom of a 10 page click through license its not good enough.