"As American security agencies increasingly take to Twitter, Facebook
and other social networking sites in search of potential threats, two
European travelers say the system lacks one important quality: a sense
of humor. The
travelers, Leigh Van Bryan and Emily Bunting, said they were detained
overnight after arriving in Los Angeles International Airport last
Monday, questioned by agents from the Department of Homeland Security,
and then sent back on a return flight to Europe." - New York Times, Jan. 30, 2012.