It says that two advertising companies will deliver ads to your pc. It gives you a link to one, which says no more than one pop-up a day. No link to the other one. And it also says no spyware.
So you download, and get about 10 pop-ups an hour, and hundreds of ad-ware and spy-ware. It's Cybernet who give you Gator and all the other things.
I gave up on kaZaA and got WinMX. Boy is it better.