This tutorial was totally cool! Props to the guy who made this, and for doing something like this while in his bored spare time... 1 complaint however is that

This tutorial was totally cool! Props to the guy who made this, and for doing something like this while in his bored spare time... 1 complaint however is that it doesn't explain much about the difference between MongoDB and MySQL, or other databases. I was really hoping to get to hear how it compares, what the pros and cons are out of using this vs. other databases