[ObjectiveSub]

I realize this post is a little tongue-in-cheek, however, you cannot use it to draw any meaningful statistical conclusions. This data makes no sense until you factor in the relative popularity of these languages on Github. We don't know if PHP has little swearing because if it is a great language, or if PHP is rare on Github. Similarly, the reason Javascript and Ruby score so highly is most probably due to the fact that they are extremely popular languages on Github.

[effn]

"To make sure that the popularity of one language over another didn’t skew the results, Vos grabbed an equal number of commit messages per language."

[ObjectiveSub]

I don't think it really matters. It may be that PHP developers that swear a lot don't use Github, or that Ruby developers that don't swear use Bitbucket, etc..