Presented at the NIME conference, Round of Applause is an interactive online installation that invites visitors from all over the world to join hands and create a large scale digital applause experiment, generating a unique rhythmic pattern. Clapping is the auditory equivalent of a group hug, a primordial and strangely exhilarating collective noise-making activity. Round of Applause extends the scale of this participative experience by allowing visitors to clap together with anyone in the world through a browser. The web-based installation listens to visitors' hand claps and repeat them to all online clappers, providing a blank canvas for a global digital social experiment in rhythmical music making.