Spyware Programs

[Serephino]

I'm in the market for a good spyware program.  I was using Ad Aware, but I lost all my programs.  I tried to get it again, and all I can find is antivirus that wants my SS number to register (don't like that much).  What other programs are good for spyware?

[Trieste]

The best place to look for advice on that is the thread that Vekseid set up specifically to answer that question.