What about the company MinersBox, also known as MinersCube ? Are they fraud too ? Pre-order month keep on changing, and no email response, no announcement to buyers as to status of any (20nm 15 tera hash/sec) pre-order machines !
Even if pre-order hardware are delivered, because of delay, significant portion of buying cost will be un-recoverable, as "difficulty" level always rising around 12% every 2 weeks or so. So any Bitcoin mining amount potential is also going down 12% every 2 weeks, approximately.