Guess they went over their bandwidth allowance! I think making the front page of HN is a bit like getting slashdotted was a few years back!
Working with hosting company to resolve...
Thnx!
P.S. The situation is resolved for now.
P.P.S. We've got so much great feedback here and via our site that it'll take some time to go through it all and get back to folks. Thank you!