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Hi Suzy,
The Voyager Golden Record and Active SETI aside, we've already been transmitting television and radio signals for the better part of 100 years.
Whether we choose to actively pursue efforts to make contact or not, if there is anyone or anything out there listening it will only be a matter of time before our presence is detected. Given the relatively small number of stars within 100 light years of the Earth, we've barely made a whisper. It comes as no surprise to me at all that attempts to detect transmissions from other civilizations have been for naught so far. I would also be very surprised if anyone ever encountered Voyager and it's golden record either, for that matter.
People like Hawking and Sagan have raised some very significant points on the matter and I would have to say that I agree with both of them. Even a very conservative iteration of the Drake Equation suggests that there are civilizations out there and if they are considerably more advanced than we are, it may not be in our best interest to bring ourselves to their attention.
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