your agreement to share a portion of your hard disk to exchange files you deem safe to exchange also is an open invitation to store files for others that would merit hard time in a federal penitentiary, needless to say my musically inclined boy wanted to share his offerings to the public, an enterprising soul determined that my machine was a good place to store stuff that would make a weasel puke, luckily my noticing that my disk was much more utilized than I expected found same and started rigorous cleanup.
peer to peer is only useful if it is a download only medium.
thanx,
bill