It would also be really nice for such a site to have a place for collecting tips, comments, feedback, like what I am reading here on HN.

I've learned a lot in just the past five minutes that will be useful for picking which (if any) courses to take in January.

It would be nice to see all these comments in one place, especially for people who don't read HN.

The courses from different universities vary drastically in quality. I don't mean the professors are not good, I mean the online versions are often include incomplete materials and I haven't seen other classes that take advantage of the medium like Stanford: with integrated quizzes and automatically scored programming assignments.

I've seen slides from MIT's OCW that say "This slide is removed for copyright reasons" in half the slides of a particular lesson - they are just not helpful.