Just wanted to let you guys know, in case you see this, that I've added a standard e-mail/password sign up/sign in option to the service -- I hope you'll take a look!
For you, or is this a broadly-observed view for customers in general? There are lots of Facebook-only apps out there, and I only selected it because it makes it incredibly easy to get folks into the system.
Speaking honestly, it also offers fantastic demographic data for those that opt-in to receive sponsored offers...
Facebook login is a dead stop for me too. Maybe your demographic is the Facebook generation, but there are lots of non-Facebook generation people who use email, want reminders, have busy lives, and money.
You pick it from the list and I use it to calculate the difference between the current time in your zone and the time you want the message, then add the difference to GMT time on my server. It was simple once I got the dots connected and figured out PHPs DateTime class. :)
I'd love any feedback or suggestions you guys might have on this little two-day project. Thanks!