As if it isn't enough that spyware are very irritating. If you are one of those who are merely irritated by the visible effects of spyware (i.e. slowing down your system) you should take these programs more seriously and get a spyware blocker. A spyware is a software that installs itself on your computer and does whatever functions it has been programmed to do. The usual function of spyware is to keep a log of information like the sites you visit, passwords, and even financial information. Because of this more is at stake than just your computer resources being used up to run the hidden program. Make sure you take precautions to avoid spyware from getting data from you computer.