"Cold "Fusion"" that provided useful and economic power would be like a Science Fiction prediction come true. We need some new, cool technology for the new Century.
Have Rossi apply for patents that cover his device so he can claim his monetary gain which is due if this is for real. Have Rossi offer up units for testing. Prior to testing he is to inform how much power it will produce. How much power is imputed to the device to keep it running, what is the net power gain, and how long will it run before needing refueling.
Give the device to the Atomic Energy Commission, The Royal Society in London and any other national or international body of science that wishes to reproduce his claims.
I am a skeptic, I hope I am wrong. If I am wrong humanity will have benefits beyond belief and Rossi will become the richest man in the history of the world. I do not think I am wrong!