[Gerald]

Originally Posted by Torplexed

Actually, it was purposely done once here on Earth that I know of from the giant Arecibo radio telescope in Puerto Rico. Although, arguably more as a PR stunt than anything else.

http://en.wikipedia.org/wiki/Arecibo_message

However, the chances, even if our galaxy is teeming with life, of someone listening, at the right frequency, at the right time, in the right direction is so mathematically remote as to be barely worth considering.

Interesting reading on the Arecibo message, it is truly an amazing versatility that you can not take on