Here are my thoughts as a one-time employee of a web hosting company; I built their DNS control panel for customers and their overall order placement and customer management API.

I think that the API access you offer is truly a great innovation in this space. I don't currently have a use case for it; have you thought of any that you could share? Programmatic creation of subdomains?

My criticism is that you need to properly answer the question of, "You're a startup; how do I know that you'll be here five years from now and my domains won't end up in purgatory somewhere because you go out of business?" Part of that echoes what nlh says below: It is not a good thing that you are advertising that you are 18. Rightfully or wrongfully, that works against you.