What’s the World Coding?

I have no idea, but this map (created by Andy Bruno, and quoted by Tim O'Reilly) shows what people who use SourceForge are up to. Update: this image shows book sales by language. Having passed Python several months ago, Ruby has now also passed Perl. Maybe it really is time to convert the Software Carpentry course... Another update: here's a long-term version of the books-by-language graph.