By Nick Tomaino You can now instantly buy bitcoin from Coinbase by adding a Mastercard credit card as a backup payment method. We previously only accepted Visa credit cards a backup payment method and today’s addition of Mastercard allows more consumers to instantly buy from Coinbase. To instantly buy you must also link a bank account. We hope to continue to improve this experience in the future.
This has been a common feature request from the community for a long time and we’re excited to finally add it. We always appreciate getting feedback from the community– you can reach us on Twitter or on …read more
Source:: http://blog.coinbase.com/2015/03/13/verifying-your-coinbase-account-with-mastercard/