Hi all. I was wondering if any of you had or used the Green Dot pre-paid visa cards? U have one that I use for my on-line purchases. That way I don't have to worry about someone hacking paypal and getting into my bank account. I tried to use it at Walmart and it didn't work (something to do with the available balance not working with their systems), I haven't tried an ATM yet. So far I like the card and find it handy. So do any of you have one and what do you think about it?