"At the bottom of every status page, we include a small, “Powered by StatusPage.io” link. While we felt uneasy about this at first, one of our mentors encouraged us to include the link and it has worked incredibly well... One-third of new signups and customers originate from our existing customers' status pages."

Love it. We've had a few moments like this at Paydirt (http://paydirtapp.com/). As engineers, we tend to have hangups about little details like this that customers genuinely don't give a second thought to, and they can be a means to massive (and multiplicative!) business wins.