This is my site! Nothing better than waking up to the front page of HN. And thanks for all the hilarious 503 error jokes. ;) Thanks for the submission.
Couple side notes:
+For those asking about using our data, go for it! We've got a json file you can tap into: http://www.howmanypeopleareinspacerightnow.com/space.json
+We are currently churning along on an iOS app that we are VERY excited about. Think: Notifications every time the number changes plus some cool social content integration.
Anyway, I'm a daily HN reader and honestly this has made my week. Thanks for all the posi vibes!