From InternetWeek:

Today, the Anti-Spyware Coalition (ASC), an alliance of technology companies and public interest groups, has taken that step toward giving users more power to control the unwanted software clogging their computers, by drafting a definition of the dreaded malware.
The group hopes that the definition will ultimately provide all users -- from individuals to large enterprises -- with the knowledge of why some programs on their computers may be identified as unwanted and then assist them in deciding whether to remove or block those programs.

Yeah, sure - let's all agree on a consistent definition that all the spyware blockers will use. You know who will be most interested in this definition? The MAKERS OF SPYWARE...