Quote from: DannyHamilton on January 26, 2022, 06:03:35 PM

Something to keep in mind is that sometimes a pool will be paid directly to include a transaction with a small fee.

From what I've seen, that fee is not "small":

Quote from: HCP on April 23, 2021, 10:22:09 PM

Correct... I just logged in and it is currently quoting the following amounts to accelerate 644417ca91a9c16e1cb11ec0ed5a0928e203119d4f1bc00a93eb7da3ece1feb3:

0.0045472 BTC ≈ 228.90

I'm not sure if they share those "sales" with the mining pool users though.

Quote from: DannyHamilton on January 26, 2022, 06:03:35 PM

I'm pretty sure that viaBTC provides a limited number of requests per hour for very small fee transactions to be included in their next block. Services like this may result in smaller rewards for any single block but may help encourage and incentivize the use of Bitcoin overall which can result in higher fees and overall higher revenue in the long term.

My assumption is they use the free transaction acceleration to "advertise" their paid service.