Caution on Twitter urged as tourists barred from US
Holidaymakers have been warned to watch their words after two friends were refused entry to the US on security grounds after a tweet.
Before his trip, Leigh Van Bryan wrote that he was going to "destroy America".
He insisted he was referring to simply having a good time – but was sent home.
See full story: http://www.bbc.co.uk/news/technology-16810312
Planet of the Blind 