The service was just launched and is looking for feedback.
There is also the option of calling a REST api to send us new signups.
Anyway, I know this site was just put up to garner demand, and you probably haven't implemented anything. If this really works, I'd be willing to pay say $30/month for it.
It works, you can go ahead and give it a try. After registration, you will be redirected to a friendly integration wizard.