At the moment there is a limit of 50 MH/s per worker. If someone has doubts about this - please feel free to test it. One can rent a rig (for example from betarigs) that has hashrate above 50 MH/s and try to mine with it. You will see that this worker will give you around 50 MH/s.
Miners that have total hashrate above 50 MH/s are using multiple workers and that is why you see some miner with 300 MH/s and above. We will let the pools run as is for now. We are considering implementing limits per IP. We might implement per IP limits in the next 24 hours.
You say IP in your post
Sorry about this, this was the initial post and at that time we were not 100% sure which limits will be implemented.
I've fixed that in the OP. Anyways, we are considering IP limits but I personally don't think it will make a huge change. The only difference is that you will not see some big miners in statistics.
The difference
is important, as it will impact the distribution of the coin. I guess you want it to be as fair as possible. Having whales using multiple miners on the pool is no different than having the same whales using only one miner on the pool. The pool will display the hash based on the account name anyway... what you are doing right now is keep away the "stupid" ones - those who are unable to set up more miners on the same account.
Well, I think that we've achieved more than that as there are no ASICs nor Multipools nor really big farms and they will not appear.
Limits per IP will put additional hurdle to people that have a farm in a single location.
Anyways, we hear what you are saying and per IP limits will be implemented during the next 24 hours. We will announce the exact time later when these limits will be implemented so that people can react accordingly.