What is PPLNS and PPS?
PPLNS si PPS are two different methods of calculating through them will determine your gain.
What is PPLNS?
PPLNS stands for "Pay Per Last N Shares" and this method of calculating payouts includes a "chance" factor. If you want to use this payment method you have to know that PPLNS has a large range - aprox. 32% from your payouts. But PPLNS earns more than PPS (aprox. 6%), but this calculation is based on a few months of datas (in my case more than 3 months).
What is PPS?
PPS stand for "Pay Per Share" and is a direct method of payment, this will pay every finalized action. But it will reduce your gain aprox. 5%.
What should you use?
PPLNS (small bussiness) - if you want to earn money, it's logic to use this method due the higher payouts.
PPS (large bussiness) - if you want to have certain statistics and mine with big servers (like more than 3GH/s).