There have been lots of lawsuits where the music recording industry has tried to serve hefty fines etc. to the companies/ individuals who encourage and even facilitate the sharing of files between people. Technically the act of using Limewire is legal. However the act of sharing copyrighted music is what the authorities will prosecute for, as you are allowing other users to download something which they should pay for, for free. The act of downloading music which is being shared by other users, is illegal, however the authorities will prosecute those who are sharing a "significant amount of music" - like drugs they will go after the dealers not the users.

Using Limewire I have recently learned is a crime. It is stealing and should not be allowed. Piracy is not a cool thing and you can go to jail for it. Whether it is videos or music it is not an okay thing to do. I don't believe it should be allowed to download and in such quick of time.