Ради любопытсва заглянул. У меня другая картина: сверху шапка от cloudflare: "This page (http://www.butterflylabs.com/) is currently offline. However, because the site uses CloudFlare's Always Online™ technology you can continue to surf a snapshot of the site. We will keep checking in the background and, as soon as the site comes back, you will automatically be served the live version. Always Online™ is powered by CloudFlare | Hide this Alert:"
Ниже "снимок" сайта, сделаный CloudFlare в момент, когда сайт работал.