We stopped accepting GreenDot MoneyPaks as a funding option roughly a month ago pending a review. We have decided to no longer accept them. We were never defrauded the issue is simply scale. MP to PayPal is useful but that is limited to only $4K per month. MP to credit cards has limited value for us and if we attempt to get cash that incurrs a high cost. We now have over $100,000 worth of Bitcoins to sell each month. MoneyPak simply doesn't scale. If GreenDot allowed us to become a MP merchant we could accept MP and get daily ACH deposits however that is unlikely to happen given GreenDot hostility towards Bitcoin.
Isn't this where Bitinstant steps in with a pre-made Greendot intermediary, all set up and ready to go? Yessir, all wrapped up in a tidy package for you, they will take the Moneypaks, and send you an ACH to disburse to your customers as you see fit. For a fee, of course. 
If not them, someone needs to do it.