I'm going to send this article to anyone who complains about how entrepreneurs only make "trivial apps" instead of solving serious "real-world problems". I love what this man has done, but to say that people unwilling to add to the stress/difficulty/risk of starting a startup by tackling a market/problem like this one is inappropriate. Yes, let's encourage entrepreneurship on all levels, but don't pretend that it's just as hard as building and selling a mobile app.