Google's Latest Experiment Brings New Superpowers to Chrome Browsers

Google's latest experiment might be the coolest Chrome extension we've seen yet.
Tone, the company's newest homegrown browser add-on, uses sound to quickly share URLs with anyone nearby. The extension is available now in Chrome's web store and can be used by any Chrome user, regardless of what type of computer they have.
In order for the extension to work, it must be installed on at least two computers that are close enough to be "within earshot" of each other and each machine must have its volume turned on. Once the tab you want to share with your neighbors is open, click on the extension in your browser's toolbar, wait for the series of beeps, and the link will be shared to all nearby computers via a Chrome notification..