Plenty of students are more than willing and able to help other people, free of charge. I personally think it would be a better use of time cultivating that and

Plenty of students are more than willing and able to help other people, free of charge. I personally think it would be a better use of time cultivating that and structuring it to be of maximum benefit to the tutor and the reader/person receiving knowledge. E.g. For a given topic, "Topic A", there may be subtopics, "Subtopic A", "Subtopic B" and "Subtopic C." One possibility may be allowing different students to explain, in their own words, the varying subtopics. People can vote on which one was the most helpful/clear as well as help correct people who may have misunderstood. As a result of this, "Topic A" may have a personalized, "user perfected" version consisting of the crowd's own vetted explanations. Paying tutors only helps the elite, who wouldn't need this to begin with. People falsely believe that help should come at a cost. Plenty of people post comments and give advice on this very site for free. As soon as you introduce money you're going to change the incentives to maximize money, not benefit to the person receiving the help. This is not bad, but it runs counter to the ideals most people think of when they think of "education" (or maybe not, who knows).