Wolf Devastator said:
So no one here has mentioned that we will no longer have any shuttles [http://www.escapistmagazine.com/videos/view/the-big-picture/2482-Once-Upon-a-Time-in-The-Future] to respond to this imminent alien threat?! Hmmm... actually, who wants to guess that they were holding out on this discovery in case there were 'budget cuts', and now that they have no shuttles they'll be like "oh, and by the way we discovered an alien civilization inside mars, ummm.... yesterday. We need our space shuttle program back D:!!!
(not sure if this was already mentioned in the 'user-made' thread, but meh)
Truth of the matter is, I don't think any alien would be well-advised to get on Earth's bad side... We still have enough firepower to blow our own planet to bits several times over, and the means of delivery are essentially the same stuff we use to put satellites into space.
Also, concerning the Wow-Signal they caught some years ago: It's exciting, but could have been anything. Though I doubt that any intelligent extraterrestrial race catching the Arecibo-message would go "hey, it's a coded message from another world!" but rather "Hey, Jim, the radio telescope is broken again, mind fixing it?"