So here’s my take on message construction: Forget about sending mathematical relationships, the value of pi, or the Fibonacci series. Rid your brain of the thought (no doubt borrowed from "Close Encounters of the Third Kind") that aliens are best addressed with musical arpeggios. No, if we want to broadcast a message from Earth, I propose that we just feed the Google servers into the transmitter. Send the aliens the World Wide Web. It would take half a year or less to transmit this in the microwave; using infrared lasers shortens the broadcast time to no more than two days.