I'm no YC dude, but if I were a betting man, I'd give them money due to:

1. History of shipping stuff 2. Huge ass market 3. Solving a real pain point for indie game devs out there 4. Simple, easily understood, business model 5. Domain experience

That's about it.

Yup. Pretty much everything is in this book:

http://www.amazon.com/Paul-Graham-Funding-Interview-ebook/dp...