Never seen this site either :

"GoogleDart" ? Please. I've got about eight 13-14 year old girls at the house for my daughter's b'day sleepover - I'm hiding out in the computer room ! Unless that site is new I'm not sure how I haven't come across it in 6-7 years of surfing for Dart related stuff, must have just hit the "radar" recently ? Definitely added to "favorites".