These are the reasons I've really enjoyed playing around with it. Unfortunately I tend to get distracted with many of my toy projects, and so little ever gets seen by anyone. But so far, with Mongo, I don't tend to get as bogged down with data modeling. That means that I usually get further into it before life takes me away.

I have no idea how well it would scale if I did build something that ended up being a success - but it's a risk I'm happy to take if (due to my own personal quirks :), it increases that chances that something that I build ends up being a success.