Comment by adiabatichottub

At first I scoffed at this idea, but then I had a tangential thought: what keeps me shopping at Amazon or ebay all the time instead of smaller retailers? It's not product quality or selection, that's for sure. It's mostly the friction of signing up for another site, entering my payment and shipping information, adjusting my mail filters, etc. What would really help would be complete automation of this process, where I click "Checkout", my browser goes through its workflow of asking me once if I approve, and a day or two later I get my product. So I guess if you had payment processing built into the user agent then you can have all the micro transactions you want.

So what's keeping this from being a reality?