It should answer the question "why?" As in "why are those the best?" Or at least carry a short review to help users choose. For example, while not recommended,

It should answer the question "why?" As in "why are those the best?" Or at least carry a short review to help users choose. For example, while not recommended, MIT Open Courseware is fairly high on the list but it's not very good for self-study. I even remember reading somewhere that it's actually targeted at teachers. Other than that, it's a fine list.