It's still not going to get much adoption because you have to "top up your account."

Any viable micropayments system that wants to even have a remote chance of toppling ads has to have near zero cognitive setup cost, absolutely zero maintenance, and work out of the box on major browsers. I need to be able to push a native button on my browser that says "Pay $0.001" and know that it will work every time without my lifting a finger to keep it working. The minute you have to log in to this account, or verify that E-mail, or re-authenticate with the bank, or authorize this, or upload that, it's no longer viable.