2) pre orders with a company who hasn't even shipped all their previous pre order from their last disaster, which came after their first disaster (FPGAs were late)
3) non refundable pre orders with a company facing legal action
4) pre orders on a flashy new product from a company who $%^&ed up the actual imaginary spec on their previous product which ended up needing WAY more power per chip and each chip delivered WAY less hash per chip due to the heat.
5) Result of 4) is money being claimed back, and far higher expenses and having to pay employees for a loooong time without actually really finishing the sales they made a year earilier
IF BFL ever deliver anything that is even 50% of what they have just started marketing I'll be EXTREMELY surprised