I retired 18 Erupter Blades a few weeks ago and my S1's will no longer be profitable soon as well. The blades were running since September of last year and did well, the S1's covered their cost and just a little over. It makes me wonder how the guys who spent >$2,000 on terrahash units will be doing in a couple of months, do you think they'll manage to recover 50% of cost before they are fully depreciated?