Has anyone come across the above firm, and do you think they are legit?

They're offering some very attractive business class deals. However, they say that they can do so because they "...book all our flights using award miles from airline loyalty programs. We purchase airline miles at wholesale from people and companies that accumulate millions of them, then pass the savings onto you..."

Is the above even allowed by many/any airline frequent flyer programmes? If not then presumably the tickets are voidable by the relevant airline?

Thanks,

Too Much Travel