Also says it's an "online survey." So it has a self-selection bias. In order to ...

adammichaelc on June 13, 2013 | parent | context | favorite | on: More Americans see man who leaked NSA secrets as '...

Also says it's an "online survey." So it has a self-selection bias. In order to be useful, the survey would have to be from a random sampling of people. Calling folks on the phone is the best way to accomplish this.