Notifu makes it easy to send group messages and handle their responses via email, SMS or Instant Messaging.
To use Notifu, you first compose a question, add valid options as answers, and a list of recipients.
Notifu sends them a mail (or SMS or IM) with instructions on how to reply. It uses SMS style answer options, so you reply “a1″ for yes, “a2″ for no.
Notifu then collects all replies and presents to you the results.
(Thanks Launchfeed)