View the list of respondents to find out:
You can add results of selected respondents to "Favorites" to view them in a separate list. You can rename every respondent.
Simpoll can notify you by email every time when a new respondent appears.
This function is enabled by default for surveys and quizzes.
Every survey has its own RSS channel which is updated, once respondents appear.
Having subscribed to RSS channel of the survey you can learn about new respondents without visiting the site.