Well I just read something that concerns me on the MB FAQ page...
Copy/Paste from their faq page:
"Do I have to fund my account first before I can send payments? Yes, you must fund your account first. The most common way to fund your account is via bank transfer: ====================================================== Go to: 'Upload Funds' > choose bank transfer as a payment method > You will be provided with bank details and your customer ID which is the reference for your transfer. ====================================================== Now, you have to instruct your bank to process the transaction. Make sure to enter your customer ID in the reference field. If you do not want to fund your account via bank transfer, find here more supported payment methods."