Google takes down App Engine sample — maybe because it was blatant ripoff Nicholas Carlson · 04/09/08 12:40PM To demonstrate its new Amazon S3-killer App Engine, Google built a sample application for the domain HuddleChat.com. The problem: "HuddleChat is just a feature-for-feature clone of 37signals's Campfire," writes Daring Fireball's John Gruber.