The article about bundled spyware.
http://news.com.com/2100-1023-257592.html

This article implies that spyware is present in Limewire (bundled or core, it doesn't say):
http://www.slyck.com/newsapr2002/041502a.html
In the following statement:
Web page tracking of users is very different from programs running on a computer. When you think of spyware, think virus. It can do all sorts of things -- watch where you surf, watch what files you download to your machine by watching folders on disk. The limit is the knowledge of the programmer which may or may not be enhanced by deals with the file sharing software creators.