I think you're absolutely right about needing a large amount of visitors (and the Amazon suggestion, obviously) but that's why I put so many ifs -- I'm talking

I think you're absolutely right about needing a large amount of visitors (and the Amazon suggestion, obviously) but that's why I put so many ifs -- I'm talking more about the idea itself -- I think it's really neat, and if Amazon were to do this on college textbooks for instance, I think it'd be great.