The captcha is just using Google's Recaptcha service. Yeah, I don't think the ad revenue will pay for the cost, but I set myself a challenge and managed to get

The captcha is just using Google's Recaptcha service. Yeah, I don't think the ad revenue will pay for the cost, but I set myself a challenge and managed to get something working quickly. It's built using Aurelia for the client-side and Node.js for the backend using Restify to create a quick REST API for handling the requests.