[TankGirl]

From infoAnarchy:

Grokster v1.5 forces CyDoor spyware down your throat weather you like it or not - if the spyware can't call home Grokster refuses to function.

Official Grokster reply:
Grokster must earn enough to pay for its development, licensing, servering, bandwidth, support, management and last, but not least, the RIAA and MPAA lawsuits. This adds up to quite a substantial sum each and every month.
We have tried many solutions up to now to develop revenue from the advertising window. Most did not result in even enough revenue to pay for a server monthly, while another resulted in a massive amount of unapproved popups (everyone remember the "bouncing monkeys"). The only solution that was left was Cydoor, as they have figured out how to effectively sell that advertising slot for P2P programs like Grokster.

You agreed to the Cydoor being there when you agreed to the terms and conditions in the current download. It was right at the top, where it could be seen without scrolling down into the other terms and conditions. We put it there to be as visible as possible.

- tg