anyone who wants to know just why they sjhould get rid of anything to do with Zango software should go here
http://www.benedelman.org
Ben Edelman is a top class Americal attorney and has worked with the FBI and other legal authorities in pursuing Zango through criminal and civil proceedings
Zango is not just spyware, those people are committing click fraud (allegedly)
and their software is perhaps one of the biggets reasons that botnets exist. at one point zango ware had created a botnet of over 450,000 computers all spamming the net
I suggest anyone who is serious about browser security should visit the above link