What is PPLNS
PPLNS for "Pay Per Last N Share" is a payment method that rewards miners once the pool finds a block. The distribution of the block is then made according to the percentage of the shares of the miner on the last N blocks found by the pool.
This method of payment favors miners who have been mining for a few hours on our ravencoin pool. In addition, this method protects our miners against "hopper": miners who mine for a short period of time trying to mine only the good times.
Blocksmith offers this type of payment for its ravencoin mining pool. Miners can configure it from their settings page.