I don't have a dog in this fight as I mine all the pools, but I do think the OP was pretty accusatory. You often see posts claiming this pool and that pool are skimming 20% off the top. I'm heavy into analyzing how things work, and I highly doubt anyone could get away with that having such a long running and popular pool. Take 10,000 miners on a specific pool, more guys like me are going to have written tools to watch and analyze their earnings. It would have been better to simply ask what a specific thing is. Both explanations posted make perfect sense to me.