Update: Google + with Extras lets users share their screen during a hangout.

Host clicks on “Share” button on Google Chrome, invites users (thru an url) to instantly see his tab-content from browsers on multiple devices (tablets, smartphone, desktops etc.,)

Contextually, users will be able to collaborate/communicate by using ‘seamlessly integrated’ IM, web cam, ‘dialed-in’ VOIP/phone/ video calls  etc,

Here’s the Concept and you mayvote here. 

Update 1: Just paid $5 developer fee on Chrome Web Store. Getting slowly started with the browser extension code.

Read related discussion on Google Chome Help Forum

Update 2 : Planning to start with a simple non-secure page. Looks like the DOM dump or serializing the DOM approach isn’t feasible for now. Setback.