The AppCircus @ European Augmented Reality Conference registration deadline has been extended till Sunday, April 18, midnight CET. The best AR apps will have a chance to be shown in front of a live audience at the European Augmented Reality Conference on April 23 and 24 in Berlin. The competition is open to any developer or startup with an Augmented Reality App. Participation is FREE. Apply here http://dotopen.com/1st-european-augmented-reality-business-conference.