Saw him in the Ben Heck room on Saturday. We'd been standing next to each other for a couple minutes, it wasn't until he spoke to Ben that I turned and we recognized each other, it was pretty funny! That's the only time I saw him at the show.
Looks awesome so far. Hasn't given me the "Ugh, I hate it when websites change the UI" thought at all! (Mostly from the current trend to spread out everything with tons of whitespace and remove all the useful data.)
Also looks like you're not forcing infinite scroll. That was the last straw for Digg back in the day.