I know for one I'll never sign any amnesty deal.... not that I've downloading anything illegal... really... I'm being serious...
Honestly though, it sounds like a trap. You sign the deal, then they'll track you. If you get caught after that point, well... you go to jail and/or get fined out the whazoo. Its kinda like... Hey! I've done it... now please watch me and I promise I won't do it again... really! Honest...
Just my $.02...