There are rumors circulating recently on various forums on the internet that a net made of coiled up silver wires increases the efficiency of a gas range when placed on top of the gas burner while fuel is being burned. According to what manufacturers claim, this is done by using the reaction of the silver wire to the heat of the flames to ignite unburned fuel being exhausted from the gas burner. This supposedly reduces the unburned waste fuel from the gas range by 38%. Additionally, the manufacturers also claim in their advertisement threads that this net increases the concentration of the flame so that more heat is transferred to the cooking containers to maximize the utilization of the heat being generated by the combustion of the fuel. This device supposedly increases the percentage of heat transferred to the cooking containers from a conventional 57% to 68%. There are even videos of this device which show the flames becoming more concentrated as the device is placed on the gas range. The device costs only $2 per unit and is said to last for 1 year, but it supposedly saves $120 of fuel every year and this translates to a savings of $118 per year when the cost of purchasing the net is deducted. The question is, does this device really work or is this just a scam?