Why not use free anti-spyware software?
Free anti-spyware products typically do not offer all of the features and functions available in CA Anti-Spyware – such as real-time protection, a spyware information database, logging, support and automatic updates. Also, free products typically cannot afford to invest heavily in research and development, meaning their products may not be as effective in detecting and removing a wide range of threats. In addition, free anti-spyware products usually do not offer the same level of customer service and technical support.