> But are they really? I mean, are there that many humans waiting in line to have a JSON pointing to a tweet?

This is just your belief in what people would want to do, and is irrelevant to whether people out there exist, and I am claiming (seemingly successfully, as my comment is resonating with a number of people) the same thing would probably be said with just as much confusion by anyone who really considers how utterly pointless a baseball card is.