Return this comment as plain text.  Useful for emails.

def get_as_text(self):
        """
        Return this comment as plain text.  Useful for emails.
        """
        d = {
            'user': self.user or self.name,
            'date': self.post_date,
            'comment': self.text,
            'domain': self.site.domain,
            'url': self.get_absolute_url()
        }
        return _('Posted by %(user)s at %(date)s\n\n%(comment)s\n\nhttp://%(domain)s%(url)s') % d