Worst possible time - and no Google cache. By tomorrow, 90% of the people who are interested would have forgotten the site, especially that they got some interest going on today. It seems to be an offshoot from Andrew Ng's team, which is trustworthy.
Lesson learned - ensure that your infrastructure can handle your times of peak interest before launching your product.
Hard to do when you don't know how many visitors you'll have to handle...
I heard this analogy when I was at Amazon: the internet is like a party where your worst fear is not that nobody will show up, but that EVERYBODY will show up.