Although shortcodes are great and we’ll continue to support and encourage them for comments the simplest possible interface seemed to be just a URL.
The URL is all you’ll need to include a YouTube video or PollDaddy poll. To try it out copy and paste the permalink for a video or a poll on PollDaddy Answers and put it on its own line in a comment, like
enter enter http://answers.polldaddy.com/poll/1598108/ enter enter. You’ll now have a poll embedded in the comment just like this: