Not ready

It looks ok, but it isn’t ready for prime time yet, IMO.
The layout on the plugin’s dashboard is broken (tutorial section has no line breaks), the email signup works, but the user doesn’t get a response if it was successful or not (unless you create a redirection to a confirmation page). Over all it leaves the impression of a beta version.
But still, it’s a functional and free plugin. So that’s something to appreciate.