It's a problem of breadth as much as depth. Finding the people to manually do this for then thousand, a hundred thousand, a million subjects is going to be a bi

It's a problem of breadth as much as depth. Finding the people to manually do this for then thousand, a hundred thousand, a million subjects is going to be a big strain. Another way of looking at it is that it already exists, as Reddit. The subreddits I'm subscribed to typically have a small collection of high-quality links that are germane to whatever the subject matter is. And when the link to what I'm looking for doesn't exist, asking typically gets me the answer in short order.