We are not actually built on MTurk. The tagline is there to allow people to quickly understand what type of tasks we can complete.<p>We bring on our own workers that have been vetted and tested by us - and are also open to working with workforce providers. In terms of scaling, we are not concerned about the supply (workers). There are a very large number of workers available - and quality can be moderated with the right onboarding and testing processes. The more difficult side of the equation is the demand side. By building a simple RESTful API - we hope to be able to generate consistent demand.