Paypal can't take money directly out of your bank account once it's deposited. They tried it for a while, they were sued and lost. If they ever do try it again, call an attorney and start shopping for a new car or home.
Google has been known to do reversals too in all fairness, from what I've read. Really, any credit card based system is going to be open to that. I'm tempted to try them though on a temporary basis to see if they live up to either hype, good or bad. Just not with any significant amount of money.
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