The recent SETI News Story.
The SETI program, the Search For Extraterrestrial Intelligence, went broke and wound up getting enough donations to start up again. The idea is to monitor space for radio signals that denote "intelligence".
As someone who keeps up with wacky stuff like The Disclosure Project and Crop Circles, looking for radio transmissions from Space seems like looking 180 degrees in the wrong direction, like maybe even intentionally. Many people in the know agree that they're already here.
Complex and intelligent communications.
If you think Crop Circles are hoaxed, for example, then either you probably don't know anything about them or the idea is too scary. There's a clear difference between stomping plants flat and seeing them bent over, unbroken and otherwise unharmed, by a force which is probably incredibly focused microwave radiation.
Can you really talk with pictures?
Then there's the mathematical content of the geometry, which communicates a good bit of stuff, as least as far as we can understand it. Some people call our own understanding of it "Sacred Geometry".
If you wanted to communicate with a backward race, you'd probably choose something like that, a quiet and polite notice that's subtle and slightly ephemeral, rather than landing at the White House or dropping off the saucer at Jiffy Lube.
You can learn all the details for yourself, and I recommend the following documentary.