Damn, I didnt realize folding added so much to a power bill. I need to read up on that stuff, I've thought about using my pc's as part time folding machines, not if I'll be going +$100 a month on electric!
i used to heat my basement with a 920 overclocked to 4.0 and a pair of gtx 285's folding, never seen 100$ increase but 20-40$ a month seems to be in the ballpark, have to figure if you are loading up say a 1000w psu for example thats a lot of 60w light bulbs bulbs on just all the time
the heat and noise of loaded gpus all the time made me stop, the electricity wasnt nice either, not alot but when i pay 60-70$ a month then my overall bill is close to 100 a month it adds up