1) Scientists confirm that neutrinos do indeed travel faster than light
2) They then find a way of controlling a flow of neutrinos.
3) This controlled flow is then used to design a messaging system (it can be pretty simple, e.g. one burst of neutrinos is a 1, a double burst is a zero, binary computer systems take it from there)
4) As soon as the messaging system is understood it's used by somebody in, let's say, 2025, to send a message back to the person who invented the neutrino-control-and-messaging service on, let's say, May 23rd 2012.
5) The message sent back in time alerts us to a pending catastrophic event in, let's say, 2018 and how to avoid it.
6) We in 2012 take the necessary measures to avoid the event, thus it never happens.
7) This then negates the need for the message sent in the year 2025 to the year 2012.
8) Which means the message is never sent.
9) Which means the catastrophe is not avoided and it happens.
10) Wait a minute.....
UPDATE: When hitting the publish button on this guff'n'nonsense, I wondered how long it would be before someone took the bait. Didn't take long.... By the way, the 5th rule of the internet is that irony doesn't travel.
UPDATE 2: Oh, just in case you haven't heard it yet here's the neutrino joke:
The barman says, "Sorry mate, we don't serve neutrinos in here."
A neutrino walks into a bar.