None of you have yet said what you find objectionable about advertisers' tracking cookies. It seems the term 'spyware' is rather general, and includes everything from tracking cookies, which seem quite benign, to obviously intrusive things like keyloggers that email your activity to a remote machine.
shocka: when you say you had 160 'spywares' on your machine, do you mean you had 160 tracking cookies? Or do you mean that 160 separate bits of software had surreptitiously installed themselves on your machine?
One has to wonder whether the makers of 'spyware blockers' are playing the same game as the anti-virus people and talking up the threat to justify their own existence...
Out of interest - those of you who feel you have been the victims of a lot of 'spyware' - do you spend a lot of time surfing, randomly downloading MP3s etc, installing new bits of software, and so on? Do you use IE, or another browser?