This was really useful, thanks FAQs. I am wondering if I join a mining pool that automatically pays my shares through paypal would be a danger. Could they send me whatever my proportions are and then later pull that back to their name?
What can I do to receive payment from pools like this, and then make sure I can not have the money taken later?
Is there a max time on how long someone can give money and then take it back, or can it be done any time?
It depends how they're paying you by PayPal.
PayPal disputes can be opened up to 45 days.
Bank transfers up to 60 days.
If credit card, it's 1 month to a year.
I'd ask for Mass Pay + a followup email from the sender about the service and how he was happy and won't dispute.... if that's one of the options. That's the safest legit way to receive money.
If you're worried about a mining pool not paying you, then get some information about who's running it. Names, addresses, phone numbers, reputation, background check. The more info you have, the more comfortable you will be. Do not blindly accept PayPal from strangers.