The poll listed four possible answers: Yes. Maybe. If he cuts my health care. No. A spokesman for Facebook said the Palo Alto, Calif., company was not aware of the poll until Monday and did not know who posted it or who responded to it. 'At this time, we don't know,' said Barry Schnitt, a spokesman for policy at Facebook. 'But we assume the developer has some or all of this information.' Schnitt said a 'third-party developer' had created the platform on Facebook that allows individuals to create their own polls. The questions are often silly and trivial, he said. But the Secret Service confirmed it has launched an investigation of the Facebook poll to learn who was behind it and to determine the intentions. 'We worked with Facebook to take it down, and we are currently investigating the matter,' said Ed Donovan, a Secret Service spokesman in Washington. Asked about who posted the poll, Donovan replied: 'That's what we are investigating.' It is a crime to threaten the life of the U.S. president, and the Secret Service said that it regularly investigates threatening comments or disturbing incidents involving words or images of the chief executive. But officials also say tasteless comments or idle bluster are probably are not enough to trigger legal action. The agency seeks to determine whether the person who made the threats had intent to carry them out or to otherwise incite violence against the president. Schnitt said Facebook has a policy of seeking to keep troubling and offensive material from its site. 'We encourage reporting. People contact us all the time if they see things that are inappropriate. And we investigate all those reports. We take action by taking it down, by issuing a warning or be reporting it law enforcement,' he said. 'At the same time, we want Facebook to be open to discuss ideas. We don't preapprove postings.' 