I'm not a customer of Baremetrics but Josh the guy who made it is a great guy and I hope to one day be able to actually have a need for one of his products.

He answered my completely unrelated questions I emailed him the other day about the technology he was using which I thought was really cool. It's awesome to see someone putting lean startup practices to work and being successful at it. As a new developer trying to learn as much as possible this is very motivating.