(1) This does not mean BFL is not a ponzi scheme. Just because they built a product in no way vets the company's operations
(2) BFL has never demonstrated a working 25, 50, and 1500 GH/s unit
(3) They accepted millions of dollars in preorder money and have yet to ship any units to the general public in the queue
(4) No reliability testing has been done on these units
(5) BFL has not been audited and thus we don't know if they have been using their ASICs to mine until it's no longer profitable and then ship. (Double dipping)