"The biggest issue with BAN is that they are hiding where the extra 10% is coming from.
Why do people hide things unless they don't want people to know it."
Disclaimer: (I really have no knowledge if the pool is profitable or not).
Yes you do, because they "claim" to pay you 10% extra - that means they are making a loss on every block they payout on.....
Think about it.
No I can not answer that as I believe the pool controls a large part if not the majority of the hashing power. But as a PPS pool I really don't care.