Soulseek:

Soulseek(tm) is a unique ad-free, spyware free, and just plain free file sharing application.

One of the things that makes Soulseek(tm) unique is our community and community-related features. Based on peer-to-peer technology, virtual rooms allow you to meet people with the same interests, share information, and chat freely using real-time messages in public or private.

Soulseek(tm), with its built-in people matching system, is a great way to make new friends and expand your mind!