Also, as others mentioned, cloud mining and hash markets are chock-full with scams and exit-scam schemes. The standard is not offering any guarantees or leverage, which in an unregulated market means what we already should know. Still in 2015 people don't seem to grasp the difference of operating in de-facto unregulated Bitcoin.
Assuming NiceHash works as advertised (you actually get what you pay for and they don't exit scam), would you still consider it a scam?
In other words, would you consider legitimate markets for buying and selling hash power to be a scam? If so, why?
Most scams usually pretend to "work as advertised" until they don't and then.... it's gone