I still have a fridge magnet of the Radio Telescope at Parkes when the first S.E.T.I search was conducted some years ago but I think they were broadcasting a message as well as just listening until someone pointed out that it might be a good idea to find out who (if anyone) or what could be listening.
While I dont doubt there must be some form of intelligent life out there ( if your using the Human Race as a measure of Intelligence!!!(Thats a JOKE, Joyce)) what use any messages might be due to the fact its taken more light years than the Human race has existed to arrive here.
Although there might be the formulae to build a better Mouse Trap hidden in there somewhere, you never know do you?
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