Yesterday in my MPAA post I was a bit harsh on Bittorrent.
A number of religious adherents jumped to its defense.
My reply was basically, yes it can be used for good a tool is not in and of itself evil, but lets be honest it usually is insecure and used for less than reputable things.
They do have some good backing. They managed to Raise Money.
This is probably because they do have very innovative mechanisms of transferring data.
Something that I think would be interesting to see is a combination of Grid computing with file storage and transfer mechanisms wrapped with security layers that are easy for the end user to configure and easy for the user of the grid to use to protect their data.