(CNN) – The social networking site Facebook on Monday pulled a third-party application that allows users to create polls after a site member built a poll asking if President Obama should be killed. [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/09/28/facebook.poll/art.facebook.cnn.jpg caption="There are more than 350,000 applications on Facebook. The company says it disables any that violate its terms."] The … Continue reading Secret Service probes Facebook poll on Obama