Similar thing happened a few years ago - somebody texted the lyrics of a Clash song to another band member.
It contained the words gun and airliner - which resulted in special branch kicking the doors in. But the police deny there is a monitoring system.<p><a href="http://www.guardian.co.uk/uk/2004/jun/03/terrorism.world" rel="nofollow">http://www.guardian.co.uk/uk/2004/jun/03/terrorism.world</a><p>(MI5/NSA - I think you are all jolly nice people who should get raises)