Every month I scan the previous months’ Hacker News 'Who Is Hiring' thread and build these stats. Hope others find this useful. Constructive feedback welcome.
This is only the first version. Next I'm planning to add more data for previous months/years as well and show the evolution of individual languages over time.
A couple of little things:
You've got both "Objective-C" and "Objective C"
It would be nice to separate out the APIs, like Cocoa and QT, or make a different graph for APIs/Frameworks