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A PCWorld article analyzes commercial anti-spyware applications and the results are simply stunning. Of the seven applications that actually cost money, two added spyware to the computer in question, and one mistook a Windows signed driver directory as spyware and deleted it. None of them worked as well as Spybot Search & Destroy, which is free, but SS&D still works best in concert with Ad-Aware, also free. You get an inverse of what you pay for.
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