Google Wallet's prepaid card concept has been plagued with its share of security concerns, and though Mountain View seems to have sorted out those issues, it's now phasing out the prepaid card program entirely. The service was intended to make up for a limited choice in debit and credit cards, and now that Google Wallet accepts any and all plastic, the prepaid option is a bit moot. The cut-off date for adding funds to a Google prepaid card is September 17th, and the prepaid option will vanish entirely on October 17th. Whereas users were previously charged $2.00 per month after 180 days without a transaction, they'll get slapped with the same fee after 30 days of no purchases. Google says you can request a refund if you have a remaining balance after the prepaid option kicks the bucket, though it's probably a good idea to just go ahead and spend those leftover dollars.