This guy thinks Americans need to learn to code because its the literacy of the future.
Well, that won't happen, however, assuming that they became aware of its existence somehow I could see some everyday people using the site to checkout what it takes to become a website designer/programmer, smartphone developer, etc. Anyhow, that is one way I would personally promote the website.
Yet, they have $2.5M in funding, nice.
Did you do a Google search for that info? I believe the video mentioned that they had 1 million users, so, I imagine that the revenue stream is going to come from advertisements.