I've been using FormsCentral for several months now, mainly to create registration forms for different events. While I love that I can update the form in FormsCentral and see the changes immediately on our website, I have gone back to using Evite for some events simply because of the email reminders. As the event date approaches, Evite sends out reminders to those that have registered. It would be great if FormsCentral had this capability, even if I had to go in and manually draft the reminder emails and set what dates I wanted to send it out. It would also be handy to be able to quickly send a note to all registrants in case of changes.
Other than that, I love FormsCentral! Thanks!