This is actually a great example of something I wanted to dig up earlier, which is a DF sponsor that john clearly doesn't give a shit about. The tone of the 'thank you note' for that can be generously described as "professional". You can _almost_ hear him gritting his teeth.

[1] http://daringfireball.net/feeds/sponsors/2014/01/cleanmymac_...

[2] http://daringfireball.net/linked/2013/03/22/cleanmymac