Today's my 3rd anniversary *and* my last day at Facebook. For the past couple years I've been working on a product called Facebook Analytics that helps developers gain UX insights about their apps. Go give it a whirl if you haven't already. This UI Kit is a *real* deliverable; the exact same file (minus some cool bells-and-whistles) that my developers use to build Facebook Analytics. If you find some of these components useful as inspiration in your own projects, awesome. :) But my *real* hope is to give you a look behind the curtain to show you the kinds of deliverables I produce for my developers day-to-day. Hit me with any comments/questions on Twitter!