Its the way nicehash works... I will not go into detail here as it is written clearly on their own site.
But.. in short... you can buy hash rates and direct them to a pool. As I have faith in the coin I upped and downed the rate as I was running out of funds for the hash rate purchased.
In short, this is not cheating and is cheaper than buying the servers you have.
We all have our own hardware or rig rentals. Investigation is the key

Hash Rate: 106.02 KH/sec
Yes that's the network hash rate eg. world total. But at the same time the devs pool at charnacoin.com is at 400 KH/sec...looks like somebody is cheating.
Edit. now the devs pool is at over 800 KH/sec versus network's 100...
Its called nicehash some of us have faith in this coin.
Also the network hash will be lower untill it catchs up. We dont all mine with laptops you know.
You are free to mine with whatever you want. I prefer 64-core server nodes.
So due to Nicehash it's "normal" for the pool hash rate to jump from 5 KH/s to 1 MH/S and back to 5 KH/s within a couple of hours? Looks more like a botnet to me.