sigh nevermind - I dont think anyone can understand my question.
I will state it one more time (already have at least half a dozen times) I do not have any issue with people donating to a pool.
I am simply asking why would they? Is there an incentive for them? do they get a lower fee? do they get part of the pool profits?
I am not being hateful or spiteful - but quite a few here are - telling me to shut up, calling me a troll etc etc.
again - was curious if there was some benefit to contributing or what not.
Relax folks and mine on!
also @phil easy brother! Again I have no issues - as for the renting of hash - it matters nothing to the pool does it? rented hash is the same as non-rented hash - the pool gets their cut when a block is found so rented hash is also to the pool operators benefit as much as it is to the benefit of those that rent it (well if a block is found, right?)
Again - let's lose the anger folks! if my questions offend - realize this, they were not intended to - and ease up a bit. Smile too - you will live longer

Do you understand meaning of word donation? None of your questions is valid, simply because of "donation" word definition.
Donations are given without return consideration.
If anytime in future -ck comes here with something like "Membership upgrade", well, then these are valid question, but this is not the case.
BTW ckpool is fully opensource, you can fork it now and start your own pool, if you think you can can fully pay the required resources from 2% of found block.