Awesome idea. Two criticisms, however:

You should get a privacy policy up asap. You're collecting and storing a lot of private information, so you should have a policy that dictates your stance.

Also, not having SMS support yet is a deal-breaker. I realize you're working on this but without this I can't use your system. As someone that doesn't have a smart phone I was excited to try your service but when I realize it was e-mail only, immediately lost interest.

Good luck with everything, and send and update to members when you have SMS support.