Google keeps patiently improving the ecosystem surrounding the Chromecast and its various software tie-ins. But the latest trick is casting not to a gadget or screen, but to a conversation. At least some users are now able to cast tabs to a video Hangouts session, allowing the recipient to watch the video (or whatever else you've got in that tab) without a cumbersome link. It doesn't seem to be live for everyone, but check out your Chromecast extension if you'd like to try it out.

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