Keyloggers, as  a surveillance tool, are often used by employers to ensure employees use work computers for business purposes only. Unfortunately, keyloggers can also be embedded in spyware allowing your information to be transmitted to an unknown third party.

eSecurity Planet 
A resource for daily information on e-security targeted to IT managers. The site provides users with information from a variety of sources, including experts at security product and services firms, and the consultants who follow the security industry.

[SBC] Eliminating Pesky Computer Pests with PestPatrol
The second new function is KeyPatrol, designed to detect both known and unknown keyloggers.

Webopedia's "Did You Know" Section
The Difference Between Adware & Spyware.