I can't remember exactly what they are called now, but in your Limewire folder there are two items you can trash: "ads" and "cookies" These might have ".doc" or something like that as extensions. (They are in the "Lib" folder in Limewire folder) After reading threads in the "Open Discussion" forum, I realized they could be deleted without harming the program. No more ads!
Oh yeah! According to the other forum, the spyware is only in the Windows versions, not Mac.