readme: document dust payment handling.

This documents how the the pool handles dust payments
generated by pool accounts.

README.md

@@ -160,12 +160,23 @@ participting accounts.
 Every mature group of payments plus the pool fees collected completely 
 exhaust the referenced coinbases being sourced from by payments. For this 
 reason payout transactions by the pool create no change. It is implicit 
-that the  transaction fees of the payout transaction are paid for by the 
+that the transaction fees of the payout transaction are paid for by the 
 accounts receiving payouts, since transaction fees are not collected as part 
 of pool fees. Each account receiving a payout from the transaction pays a 
 portion of the transaction fee based on value of the payout in comparison to 
 the overall value of payouts being made by the transaction. 
 
+## Dust payments
+
+Dust payments generated by participating accounts of the pool are forfeited 
+to the pool fees paid per each block mined. The reason for this is two-fold. 
+Dust payments render payout transactions non-standard causing it to fail, also 
+making participating accounts forfeit dust payments serves as a good deterrent 
+to accounts that contribute intermittent, sporadic work. Participating accounts 
+become compelled to commit and contribute enough resources to the pool worth 
+more than dust outputs to quarantee recieving dividends whenever the pool 
+mines a block. 
+
 ## Testing
 
 The project has a configurable tmux mining harness and a CPU miner for testing