Glad you liked it.

Great suggestion on creating similar landing pages for niche reminder services. I've looked into Google keyword tool, but haven't thought of using it this way. Will look more into it.

No, iPhone app is not everything. You're right, in fact, the main juice is in Web service. iPhone is just a client based on my API. Starting with an iPhone app was just market position approach. There is no app in the app-store which provides this simple solution, so thought let's start with that, and then expand. Web service solution is coming soon though.

Thanks again for your valuable feedback.