One thing from that article...is it really a good idea to send signals to communicate with other intelligent species (if they exist there)?
haha "Hey, look at us aren't we a great food supply for you?"
Well think about it. If they are advanced enough to be able to travel to us, there is a good chance they knew about us whether or not we are sending signals.
20 light years away.200 years to retrieve the information back.Not worth it.