We have the largest database on online shopping behavior this side of the Equator. We use it to build awesome recommendations that tens of millions of people use. We lead our market, our customers love us.
We need more people who can take this gigantic, ever-growing database and turn it into stuff that makes people's lives better. Yes, it's an open problem. Fraud protection? Effective, non-annoying ads? A social network? Robots? We need people who will help shape our future.