Book recommendation
A review of the book Contact with Alien Civilizations here:
Beep, beep, bop, be-bop. These could represent a new song or a communication from intelligent species on another world. With discoveries of more and more planets circling far away suns, there seems an increasing possibility that we have fellow, smart occupants sharing this universe.
Michael Michaud takes this consideration seriously in his book Contact with Alien Civilizations. In a very forwarding looking text, he puts sound reasoning into analyzing the issues about if and when we find we're not alone.
Full review here:
http://www.universetoday.com/2007/06/07/contact-with-alien-civilizations/