This is an exciting development; another step toward being able to eventually (though probably not that far away) determine the atmospheric composition of another planet.
It may be that we will first detect extraterrestrial life not by their radio signals, but by visually seeing and analyzing their planet's atmosphere!
ETH Zurich/Swiss Federal Institute of Technology. "Exoplanet Reflected Light Detected For The First Time." ScienceDaily. 28 December 2007. 31 March 2008 <http://www.sciencedaily.com/releases/2007/12/071226225432.htm>.