Interesting project, have been mining since yesterday and the pool is working well.  Receiving payouts as expected and I will stick with it.  Hope to see this project develop more in the future.

You have to put your private key into a local .ini file on your mining rig which is read by the mining software and used by the Infura API.  Obviously it would be wise to use an eth wallet dedicated for this purpose and which only contains a small amount of eth to cover gas costs.  However the key will be as secure as your local system is and it is wise to lock-down mining rigs as much as possible anyway.

This wont be an issue in the very near future once difficulty rises to the point that mining pools are developed.  But if you are willing to do so carefully you can take advantage of solo mining at very low difficulty.

Nobody seems to actually be mining this coin, I had a go earlier and there was one other person submitting solutions.  The solutions are almost instantaneous when a new challenge appears and so everyone will submit at the same time and whoever wants to pay the highest gas will end up minting it with everyone else just throwing away $0.25 per useless solution.  The difficulty needs to be increased before there is really any point in attempting to mine.

Also dev, Ive noticed a strange pattern of the other address only mining if someone else is and then setting their gas price just slightly higher.  Can you confirm is this you (address 0xb5cf1cf6cb169c85863e3ecef1c73418aeb0f81f) and are you using some sort of script to adapt the gas limit?