The site shares the ad revenue proportionally based on the amount of hits your pastes get in proportion to all monetized pastes as whole.
Every 24 hours, the site checks the ad revenue balance that has been received since the last payout. The site then takes a portion of the ad revenue and calculates the amount of bitcoins paid per unpaid hit by dividing the amount of bitcoins with the amount of unpaid hits on the site at the time.
( Value of unpaid hit = bitcoins to be paid to users / amount of unpaid hits )
Your unpaid hits are then converted into paid hits and deposited into your balance.
( Paid amount of bitcoins = amount of unpaid hits * value of unpaid hit )
Bitcoins will be sent to your Bitcoin address once you have earned at least 0.0025 BTC (2.5 mBTC).