IP blocker. Helps you keep your privacy while using a p2p client (file sharing program like kazaa,limewire,enule etc). Blocks all unwanted IPs from reaching your computer (ads,spyware,trojans,anti-p2p organizations,goverment organizations etc)Peer Guardian also lets you customize "black-lists" of IPs you want to block.
The program is mainly used by people who don't want to get caught downloading illegaly or people who don't want to catch a computer virus while downloading software.
Sweet I just downloaded Peer Guardian 2.0, now I don't have to worry about getting spyware shit from kazaa.