Programs designed to monitor user activity. They may be used with or without consent. Because it is sold commercially, many anti-virus vendors do not detect them. The most common form of a commercial monitoring tool comes in the form of a keystroke logger, which intercepts keystrokes from the keyboard and records them in a log. This can then be sent to whoever installed the software, or keylogger, onto the machine. Some Commercial Monitoring Software may take screenshots or video and send the information to an outbound connection.
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From Downloads.com:
"MessengerLog Pro can log everything from Windows Live Messenger including winks, emotion icons, sent and received files, hand writing, text font and colors, online status of your contact, and audio/video invitations. It has more features than ever before, such as working in an absolutely hiding mode, suitable for parent controls, managing log efficiently and safely with advanced search engine and encrypt method, ten color themes and reading mode."