In contrast to all the cynicism I see in other comments, this is awesome! Even if it doesn't happen to everyone, I find anyone who can manage to survive building and pursuing their passion to be inspirational. It reminds me that even if the odds aren't good, the journey can most certainly be worth quitting your job.

As I start bootstrapping my own idea off the ground it helps to see stories like this. Being able to stay motivated and optimistic looks to be a helpful component of success.