&gt; “When Twitter says, ‘We can’t do this,’ I don’t believe that,” said Hany Farid, chairman of the computer science department at Dartmouth College ...  “There’s no fundamental technology or engineering limitation,” he said. “This is a business or policy decision. Unless the companies have decided that they just can’t be bothered.”<p>Can anyone comment whether this is true or not? It seems rather trivial to create new accounts and post data. Is it just whack-a-mole or is there something more sophisticated that goes on?