I'm a longtime Tixati user but unfamiliar with what this tool is for or can do.
My torrents load up my bandwidth.  What can I benefit from FOPNU with regard to security or privacy if that is the goal?

Fopnu is a P2P File Sharing System.

It does not use torrents.

You share files/folders with the network.

It is a lot like WinMX was.

And DarkMX is essentially Fopnu over the TOR network.