Spyware differs from viruses and worms in that it does not usually
self-replicate. Like many recent viruses, however, spyware - by
design - exploits infected computers for commercial gain. Typical
tactics furthering this goal include delivery of unsolicited pop-up
advertisements; theft of personal information (including financial
information such as credit card numbers); monitoring of Web-browsing
activity for marketing purposes; or routing of HTTP requests to
advertising sites.

Adware and Spyware are
often bundled together and sometimes removal is extremely difficult.
RemovalMethods.com offers you these various spyware and adware
removal methods and removal techniques for most operating systems
like Windows and Linux.
"Spyware":
Research, Testing, Legislation, and Suits
As of 2005, pundits have often characterized spyware as the pre-eminent
security threat for computers running Microsoft Windows operating
systems. Some malware on the Linux and Mac OS X platforms has behavior
similar to Windows spyware, but to date has not become anywhere
near as widespread.Read more...