They also started advertising in the docs of Capistrano, and when it launched it had a bug that made the ad appear on every pageview: <a href="https:&#x2F;&#x2F;twitter.com&#x2F;kaspergrubbe&#x2F;status&#x2F;704355597429436416" rel="nofollow">https:&#x2F;&#x2F;twitter.com&#x2F;kaspergrubbe&#x2F;status&#x2F;704355597429436416</a> :)