Homeworks? Lack of a sign-up link? Interesting that they have grammatical errors on this page considering their goal here (to compete with other top universities doing the same thing)
who says they are trying to compete with other universities? the goal here is to provide quality education accessible to everyone. it also looks like the webpage was created by the professor himself (http://work.caltech.edu/ is his personal page) and may not be completely ready yet.
There is a whole subsection of the internet dedicated to exactly that. Mini-sites are generated either using wordpress or other scripts get content from all over the internet, spin it and then put it up on a domain with a standard template and stick adsense advertisements on the side. Makes pretty good money if you have a large enough network and do some SEO.