If you have many friends that are windows power users, there's a high chance they'll use rar if they ever have files to send you. This may be indicative of th

If you have many friends that are windows power users, there's a high chance they'll use rar if they ever have files to send you. This may be indicative of their cultural familiarity with the warez scene, but they use it for anything. I've received rars from people of their own music, photos, projects, etc.