I like it.
It proposes an interesting question. How the hell will we react to alien life and are we as a race prepared for it.
Also, why the fuck did NASA have only naked illustrations of people. The aliens are going to think we don't wear clothes or aren't afraid of our junk hanging out. Hell, i think they will find it and all the aliens will be laughing at us for our pathetic attempt a first contact and the fact we don't have clothes. Forget Steven Hawkings arguments about hostile invasion, what about the embarrassment!
I bet they will just start to send creepy messages, there teenagers already screw with out fields.
Also, i knew it was from Uruguay, but when i heard the Spanish aliens i thought "Damn it! Now we will have more Aliens immigrating here! "