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We sent a few signals decades ago, but haven't done anything since. It is barely conceivable that if they are fairly close they might be able to make out something from our general RF traffic, but highly unlikely.

We are still sending out signals but not the type you may think, turn on your TV or Radio these signals are flooding our solar system right now.  If I remember about 6 months ago or so there was a special on either History Channel or Discovery about contacting aliens and how our first  TV and radio was are now just reaching our closest neighboring system. Even if there is intelligent life there how long would it take them to decode our several hundred languages or what they would make of I Love Lucie or the Twilight Zone?
And then if they figured out our language do you think they would want to contact us? And who is to say they haven't tried already and some cultures thought they where Gods of some type? Look at the some of  cultures from the past and what they have done with stone tools. Looks at the Pyramids in both South America and Egypt, StoneHenge and other wonders that people of the past had created and still our understand of why they created them or why their gods looked so Alien to us as moden human.
I could go on for hours on this subject. As for using my computer to search for alien life, no I won't.

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