The other question, since I've just seen that pool administrator Artides inside thread: How to flush a mined to adress onto 0,- ballance? Leaving mining dust today might get shrugged of, but I have to consider that 0,0xy XMR left behind could one day end up valued like "other coins" had been, then could be like $99 you just forgot inside a pant's pocket.
From some time I made payouts rounded to 0.1 XMR.
It was made due to reduce of dust in blockchain and wallets. And the rest (0.0xxx) stays on the account balances till next payout.
For active miners it's not problem, the new earning will be added here.
I have transferred always manually any balances if somebody ask.
Now I have Idea that I will collect inactive accounts and will proceed autopayout for all balances one time per week.