Hi guys! I'm Alex from Western Oz and I've recently launched my new (third) product - FullStack.Café: https://www.fullstack.cafe.
In short it's a service that helps Full Stack devs to browse high quality Interview Q&A and compile Q&A Preparation PDFs. I still didn't decide how to monetise the service and will be happy to hear any of your monetisation ideas or feedback!
That's pretty cool!
An idea to monetize: offer tests for a one-time purchase.