The idea is great but the landing page suddenly highlights people to connect their accounts, you can tweak that a little bit, because some people when they suddenly see the big buttons asking for connecting their social profiles, might panic:) And I don't even see about page, how it works (I know its very simple) but still, matter of trust. Just my two cents. You can ask that in a subtle way.
What more information would you like to see? Like you say the service is pretty straightforward so I'm not sure what else to explain.