Seems like everyone hates them.
I guess the ones that buy their products don't consider it necessary to post here.
It appears I'll be joining in with the common sentiment here as I will never purchase from BFL again (preorder or product in hand). Aside from the obvious reasons (consistent massive delays, overpriced inefficient hardware, and an unprofessional approach to PR), I'm not impressed with their overall customer service or the reliability of their products.
Currently operating 6 Singles (60GH/s models), I've had 3 of the provided power bricks die and 1 Single was DOA; 2 PSUs shorted out with a pop and puff of smoke, the other just sort of stopped working one day. The DOA Single and 1 PSU was shipped back for replacement (at my expense...apparently they don't cover that) and nearly two weeks go by before I have a working replacement. The other bricks haven't been replaced, and they probably won't be -- what's the point since they're cheaply made anyway? Might as well grab a decent $200 PSU off Newegg and save myself the headaches later on.
Anyway, there's competition in the marketplace now. We can finally let BFL die off as KnC, BitFury, and others take the reins.