I worked on just this for last year's Rails Rumble: http://morsurl.com/ http://morsurl.com/ The site acts as a proxy, injecting some Javascript based on Selec

I worked on just this for last year's Rails Rumble: http://morsurl.com/ http://morsurl.com/ The site acts as a proxy, injecting some Javascript based on SelectorGadget to allow the user to select parts of the page, and injecting inline styles to display the highlighted parts of the page.