Is BFL a cloud mining service?
No, Butterfly Labs is a mining hardware developer or was I should say.
Well initially yes, but with their last product offering, they also brought out "hosted mining" and "mining by the Gh" plans that could be thought of as cloud mining.... which were dependant on large quantities of their latest equipment being manufactured, so don't know status of those at present, whether they've brought significant amounts online or not.
and the "was" I guess, is because it could be doubtful whether they will have the spare funds to develop another generation of hardware. However, they could "race for the bottom" with Antminer, against which I think they are still competitive on W/Gh, so need to get realistic on pricing. Selling from stock, they may just scrape up enough cash for developing another generation.
However, they would actually represent a somewhat tempting target for a venture capitalist to re-invent, presuming that they probably insist on their own management team.