an exciting experiment. I think difficulty decrease is inevitable - well, eventually; hence why I i'll be stashing away my old rig when it becomes a loss leader (not long to go now!) I see friends cutting their losses and selling their old 130nm mining equipment off, but i'm hedging my bets on this, i'll still be mining for the very last 0.00000001 transaction fee, because i'm a geek and I believe in the long term value. Eventually, the big farms will be forced to switch off and - here's my hope - their respective governments sting them a whacking great tax on the recycling of electronic goods. That'll teach them for being so greedy  one can but hope.