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Personally, I have about $7.50 in dust left on Kano's pool since 2016.
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If it's above dust 10,000 sat, I'll probably get around to sending it out sooner or later.
I've been very busy with coding on the KanoPool.
As everyone knows we have a full 100% proof of payment page (uses the blockchain information to prove the payments)
with a CSV download
I've also been doing dust payouts to any miner who gets a payout
i.e. Block reward + owed dust, so most of the current miners have zero dust left
(there were only a few owed extra in the last block)
The KDB code has had sizeable additions done over the last months (and still uses way less CPU than ckpool), and soon there'll also be the option for Solo mining on KanoPool.
For a limited few medium long term miners (of my choice) they'll also be able to mine 50% PPS until the PPS funds run out

PPS is normally
NOT an option for small pools, since to run it long term, the backing is a large amount of BTC.
Using the calculation from my post here:
https://bitcointalk.org/index.php?topic=104664.msg48795003#msg48795003Current reward 6.25 BTC for a 0.1% chance of the pool going bankrupt, with a 3% fee, the backing required is:
719.5625 BTC or about $6.8 million
(my PPS I'll have is simply to have a buffer that when it runs out, they'll simply have to switch their miners elsewhere or to PPLNS - but no losses since I'll payout the trailing end of mining of course and can switch off PPS mining with a command)