"You're going to be hard-pressed to evade law enforcement (by) reading stuff on Twitter, " said Blanton, who added he has never heard of a criminal successfully using the service to escape police.
Internet service providers would escape prosecution if they took steps to remove illegal gambling sites from their servers or blocked access to sites hosted elsewhere.
Stefan is the son of a cast-off diplomat who is sacked from the East German foreign service for a minor misdemeanour just as the Vogel family was about to be posted to New York and escape the dreariness of East Berlin.