Basically spyware can range from simply annoying to very dangerous. Dangerous in that some of the worst ones can log all your keystrokes and send that data to a server in another country all without your knowledge. Considering all the online banking and credit card usage that goes on every day, it's obvious how scary this could be. You of course want to limit your exposure to damage. This is where a good Win32 Anti Spyware software comes in. But what do you look for when analyzing your options? Here is a list of some of the most important features: