You need to weigh up the possibility of helping further life that is very alien (with radically different morality—see http://lesswrong.com/lw/y4/three_worlds_collide_08/ for great examples) against the chance of drawing unwanted attention to ourselves. My intuition is that the scale would lean heavily in favour of staying quiet. Unless there is some reason to believe that morality would somehow be convergent in the universe?
You need to weigh up the possibility of helping further life that is very alien (with radically different morality—see http://lesswrong.com/lw/y4/three_worlds_collide_08/ for great examples) against the chance of drawing unwanted attention to ourselves. My intuition is that the scale would lean heavily in favour of staying quiet. Unless there is some reason to believe that morality would somehow be convergent in the universe?