Looks cool, but it hijacks my browser history with the "Signing In..." page which doesn't seem to do anything. On a side note, I'd recommend making the link to

Looks cool, but it hijacks my browser history with the "Signing In..." page which doesn't seem to do anything. On a side note, I'd recommend making the link to the API documentation more prominent than a link mention in the write-up, as it is the core part of the service.