The problem of Spyware
Spyware is defined as programs that are not malicious but are designed to transmit information about your surfing habits for the benefit of others without your knowledge.

Spyware can manifest itself by being bundled in the install program for legitimate software or it can come in the form of a browser toolbar that can seem trustworthy from the outset.

Spyware is becoming a much more widespread problem and is getting to be a big problem like viruses and hackers and for this reason it is important that you have an anti-spyware program running on your computer so that you are protected.

I recommend Microsoft Defender, which can be downloaded from here: http://www.microsoft.com/athome/security/spyware/default.mspx