There was Apture which was doing similar. They got bought by Google last year. http://techcrunch.com/2011/11/10/google-buys-contextual-rich-news-browsing-start

There was Apture which was doing similar. They got bought by Google last year. http://techcrunch.com/2011/11/10/google-buys-contextual-rich-news-browsing-startup-apture-to-beef-up-chrome/ http://techcrunch.com/2011/11/10/google-buys-contextual-rich...